Systematics and the properties of the lanthanides. : Edited by S. P. Sinha. D. Reidel,Dordrecht/Boston/Lancaster, 1983, 648 pp, 195 D fl.

The Δ-α-and Λ-β- forms of [Co(edda)CO₃]^? have been isolated as crystalline diastereoisomeric salts of the cation Δ-[Co(en)₂(ox)]⁺. When each salt is dissolved in 1.0 F aqueous Na₂CO₃ at 25°C an isomeric equilibration process occurs between these species in which the Δ-α form predominates before the eventual racemisation of both anionic species. On proceeding to equilibrium the Λ-β-[Co(edda) CO₃]^? isomer is observed to invert its absolute configuration at the central metal ion in converting to the Δ-α stereoisomer. This is the first reported example of inversion-isomerisation involving the β → α transformation in a chiral complex containing a linear tetradentate.     

Two-dimensional, 1H-n.m.r. study of peracetylated, reduced derivatives of three oligosaccharides isolated from human milk

The structures of the peracetylated derivatives of the following alditols obtained from oligosaccharides of human milk have been established by two-dimensional, J-resolved and J-correlated, ¹H-n.m.r. spectroscopy at 360 MHz: β- d-Galp-(1→3)-β- d-GlcpNAc-(1→3)-β- d-Galp-(1→4)- d-Glc-ol, α- l-Fucp-(1→2)-β- d-Galp-(1→3)-β- d-GlcpNAc-(1→3)-β- d-Galp-(1→4)- d-Glc-ol, and β- d-Galp-(1→3)-β- d-GlcpNAc-(1→3)-[β- d-Galp-(1→4)-β- d-GlcpNAc-(1→6)]-β- d-Galp-(1→4)- d-Glc-ol.     

Structure elucidation of the core octasaccharide from Citrobacter PCM 1487 with the aid of 500-MHz, two-dimensional phase-sensitive correlated, relayed-coherence transfer, double-quantum, triple-quantum filtered, and N.O.E. H-n.m.r. spectra

The main features of the primary structure of the octasaccharide, - -Glcp-(1→2)-- -Glcp-(1→2)-[- -GalpNAc- (1→3)]-- -Galp-(1→3)-- -Glcp-(1→3)-[- -Hepp-(1→7)]-- -Hepp-(1→3)-- -Hep, have been determined in the ab initio manner by ¹H-n.m.r. spectroscopy without resorting to biochemical methods of analysis. Several nontypical interresidue n.O.e. values point to a preferred solution conformation of the molecule.     

The helminth parasites of the lesser flamingo,Phoeniconaias minor (Geoffroy), from Lake Nakuru,Kenya, including a new cestode,Phoenicolepis nakurensis n.g., n.sp.

Summary Seven species of cestodes and two of nematodes are reported from Phoeniconaias minor from Lake Nakuru, Kenya. Phoenicolepis nakurensis n.g., n.sp. (Hymenolepididae) is characterized by the size and shape of the hooks, scolex and strobila, structure of the terminal genital ducts, presence of an accessory sac, external seminal vesicle and stylet, and absence of an internal seminal vesicle. Gynandrotaenia stammeri. Cladogynia phoeniconaiadis, Flamingolepis tengizi, F. dolguschini and Striatofilaria phoenicopteri are redescribed; all except C. phoeniconaiadis are new for this host and for Kenya. ac]19800210Abbreviations as accessory sac - c cirrus - cs cirrus sac - esv external seminal vesicle - g gland cells - gs glandular sheath - isv internal seminal vesicle - md muscular duct - Mg Mehlis' gland - o ovary - pg prostate gland cells - s stylet - sr seminal receptacle - u uterus - v vagina - vd vas deferens - vg vitelline gland     

Redescription of a poorly known marine ciliate, Leptoamphisiella vermis Gruber, 1888 n. g., n. comb. (ciliophora, stichotrichia, pseudoamphisiellidae), from the Yellow Sea, China

Leptoamphisiella vermisGruber, 1888 n. g., n. comb. (basionym Epiclintes vermisGruber, 1888) is an extraordinarily large and worm-like marine stichotrichous ciliate. Based on a population isolated recently from coastal waters of Qingdao, China, the living morphology and infraciliature are redescribed and its taxonomic position is defined. Accordingly, a new diagnosis for this species is suggested: large, marine Leptoamphisiella with a conspicuous layer of pellicular alveoli; 400-1000 microm x 40-70 microm in vivo; body band-like, highly flexible; about 40 membranelles; always three frontal and two buccal cirri; 52-80 transverse cirri (TC) extending to the posterior end of the buccal field; 57-79 left midventral and 44-62 right midventral cirri; 62-102 cirri in left and 63-91 cirri in right marginal rows (MR); 9-13 dorsal kineties that extend the full body length; about 100 macronuclear nodules and 5-13 micronuclei. The diagnosis for the new genus is as follows: vermiform Pseudoamphisiellidae with strongly contractile body, differentiated frontal, buccal, and highly developed TC; two remarkably separated midventral rows; one MR on each side of the body; frontoterminal and caudal cirri absent. Leptoamphisiella vermis n. comb. is fixed as the type species of the new genus.     

Grommets,tonsillectomies, and deprivation in Scotland.

OBJECTIVE--To see whether there is a relation between grommet insertion operation and tonsillectomy rates, otolaryngology services, and deprivation scores in Scotland. DESIGN--Analysis of routine 1990 NHS data on grommet insertions and tonsillectomies in Scottish children aged 0-15 years compared with data on general practitioner and otolaryngology services and Carstairs deprivation scores. SETTING--All 15 Scottish health boards. SUBJECTS--All children aged 0-15 (1,021,933). RESULTS--Tonsillectomy was more common than grommet insertion operations in Scotland (6182:4850). Health boards with high grommet insertion rates were more likely to have low tonsillectomy rates (Spearman''s rank correlation -0.59; 95% confidence interval -0.87 to -0.03). Grommet insertion rates varied fourfold (from 2.4/1000 to 9.2/1000) and tonsillectomy rates twofold (from 3.6/1000 to 8.0/1000) across Scottish health boards. Variation between health boards had changed over the 15 years 1975-90. Variation in grommet insertion rates did not reflect variation in the supply of otolaryngology consultants (Spearman''s rank correlation -0.25). There was a non-significant tendency for high general practitioner referral rates to be associated with high grommet insertion rates, low tonsillectomy rates, and less deprived areas (Spearman''s rank correlation coefficients 0.50, -0.53, and -0.43). Deprivation (measured by Carstairs scoring for each health board) was associated with higher tonsillectomy rates (Spearman''s rank correlation 0.41; 95% confidence interval -0.22 to 0.80) and significantly lower grommet insertion rates (-0.73; -0.92 to -0.28). CONCLUSION--Social factors as well as differences in disease prevalence and medical practice need to be considered when studying variation in childhood grommet insertion and tonsillectomy rates.     

Papillonema danieli gen. et sp.n. and Papillonema clavatum (Gerlach, 1957) comb.n. (Nematoda,Desmodoridae) from the Ceriops mangrove sediments of Gazi Bay,Kenya

A new genus, Papillonema gen.n., is erected to accomodate the two species P. danieli gen. et sp. n. and P. clavatum (Gerlach, 1957) comb.n. from intertidal sediments of a tropical mangrove. Papillonema gen.n. is characterized by prominent papilliform labial sensillae, an elongate muscular terminal bulb (up to 60% of pharyngeal length), and three precloacal supplements. Comments are given on the use of the terms head capsule, head region, and cervical setae.Abbreviations a: body length divided by maximum body diameter - abd: anal body diameter - amph %: diameter of the amphid as a percentage of the corresponding head diameter - aw: amphidial width - b: body length divided by pharyngeal length - bdcs: body diameter at level of the cephalic setae - bdnr: body diameter at level of nerve ring - c: body length divided by tail length - cs: length of cephalic setae - da: distance from anterior to anus - dcs: distance from anterior edge to cephalic setae - dnr: distance from anterior edge to nerve ring - dv: distance from anterior to vulva - gub: length of the gubernaculum - hw: head width - L: body length - Isp: length of sperm cells - mbd: maximum body diameter - mbd ph: body diameter at level of pharynx - ph: pharyngeal length - spic: length of spicules measured along the arc - t: tail length - tmr: length of non-annulated tail end - V: position of vulva as a percentage of the total body length from anterior - wsp: width of sperm cells     

Geschlechtliche organisation,fortpflanzungsverhalten und ursachen der sexuellen vermehrung von Stenostomum sthenum nov. spec. (Turbellaria,Catenulida)

Certain temperatures and H-Ion concentrations are necessary for the development of male and female reproductive organs. The differentiation of the reproductive system from undifferentiated cells conforms precisely with data on other species of Stenostomum.

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Abkürzungen in den Abbildungen b Bindegewebszelle - c Cilien - cy Cytoplasma - d Darm - de Ductus ejaculatorius - dl Darmlumen - do Dotter - dr Drüsenzellen - lr Lÿckenraum - m Mundöffnung - n Nucleolus - np Nephroporus - o Ovar - p männlicher Genitalporus - pa parenchymatischer Raum - pf periembryonale Flüssigkeit - dse dorsale Epidermis - e dorsolaterale Epidermis - ed extraembryonaler Dotter - ee Epidermiseinstülpung - eh Epidermis +Hautmuskelschlauch - em Embryo - ex Exkretvakuole - f Freßzelle - g Gehirn - ga Gehirnanlagen - gr Granula - h Hautmuskelschlauch - hz Hüzllzelle - kl Versehlußkegel/Klebkegel - in indifferente Zelle - k Kern - kdr Klebdrüsenzelle(n) - kk kollabierter Kanal - kö Körnerkolbenzelle - kp Kopulationsorgan - ku Kufen - kw Körperwand - l Lichtsinnesorgan - li Linsenkörper - lk lichtbrechende Konkremente im Darmgewebe - ph Pharynx - phr Pharynxregion - pr Zentralkanal des Protonephridialsystems - ps Präspermatide - pu Punktfeld - q Zellquartett - r Riechgruben - rh Rhombuszellenband - rhb Rhabditen - rm Radiärmuskelzelle - rhs Rhabditenschleim - rs resorbierende Darmzelle(n) - s Schale - sc Spermatocyten - se Sekretgang - t Tastborste - ta Auflösungsprodukte des Hodens - te Hoden - to Terminalorgane(e) - tz Teilungszone - v Vakuole - w vermutliches Rudiment des weiblichen Genitalporus     

中国荞麦属（蓼科）一新种——密毛野荞麦

描述了蓼科一新种——密毛野荞麦（Fagopyrum densovillosum J. L. Liu）,本种与细柄野荞麦（F. gracilipes(Hemsl.) Damm. et Diels）相近似,不同在于植株全体密被白色直立长毛,茎枝较粗壮,节较密集,节间较短, 叶较大,长（0.9～）1.7～6 cm,宽（0.7～）1.2～5.1 cm,阔卵形,心形,阔心形,阔卵状心形,卵形,长卵形,三角状卵形或卵状三角形,在上面具细皱纹,明显小泡状突起,叶柄较长,长 (0.5～) 2.6～7.5 cm,果实较小,长1.8～2.5 mm,直径1.5～2 mm,易于区别。     

Establishment of a new amphileptid genus, Apoamphileptus nov. gen. (Ciliophora, Litostomatea, Pleurostomatida), with description of a new marine species, Apoamphileptus robertsi nov. spec. from Qingdao, China

A new pleurostomatid genus Apoamphileptus is described, which is diagnosed as: Belonging to the Amphileptidae with spica on right side; on each side of the cell, a single perioral kinety, which encircles the cytostome and does not extend to the posterior end of the cell; somatic kineties of both sides near ventral margin shortened and forming a postoral suture; two to several extra fragments with densely arranged dikinetids located in anterior portion of left side. As the type species, the morphology and infraciliature of Apoamphileptus robertsi nov. spec., isolated from a shrimp-farming pond near Qingdao (Tsingtao), China, have been investigated using living observations and the protargol silver impregnation method. The diagnosis for this new species is: Apoamphileptus 90-180 x 30-60 microm in vivo, body elongate pyriform-shaped and slightly flattened; with one cross-striated band along the cytostome; 2-6 (generally 4) large macronuclear nodules, one micronucleus; 33-43 right somatic kineties; left side 6-8 kineties; two extra anterior fragments on left side; about 13 contractile vacuoles dispersed throughout whole body; extrusomes absent or not recognizable; marine habitat. Some morphologically related morphotypes are discussed and tabulated. Regarding the pattern of infraciliature and other morphological features, the well-described fresh-water species, Amphileptus claparedii Stein, 1867 is believed to be a member of this new genus, hence a new combination is suggested: Apoamphileptus claparedii (Stein, 1867) nov. comb.     

Thermobacteroides acetoethylicus gen. nov. and spec. nov., a new chemoorganotrophic,anaerobic, thermophilic bacterium

The taxonomic and metabolic characteristics of a new caldoactive bacterium, Thermobacteroides acetoethylicus, that is prevalent in volcanic features where organic matter is vigorously being decomposed is described. T. acetoethylicus is a nonsporing, obligately anaerobic rod that stains gram-negative and exists singly or in pairs. Electron micrographs revealed peritrichous flagellation and a distinctive outer wall envelope structure without an outer wall membrane layer. The temperature range for growth was >40°C and <80°C; the pH range was between 5.5 and 8.5. The DNA base composition was 31±1 mol% guanosine plus cytosine. Fermentable carbohydrates included glucose, mannose, cellobiose, lactose, maltose, sucrose and starch. Growth on glucose in complex medium was associated with a 30 min doubling time; and ethanol, acetate, H₂/CO₂, butyrate and isobutyrate accounted for a balanced fermentation. Lactic acid was not formed. Growth was inhibited by O₂, 2% NaCl, penicillin, streptomycin, vankomycin and neomycin, but not by chloramphenicol or hydrogen (2 atm). Glucose was metabolized via the Embden-Meyerhoff Pathway. A molar growth yield of 18.3 g cell per mol glucose and an ATP yield of 8 g cell per mol ATP produced was obtained. These results support the absence of detectable cytochromes and suggest that energy conservation is via substrate level phosphorylation alone.Abbreviations DNA deoxyribonucleic acid - ATP adenosine triphosphate - LPBB low phosphate buffered basal - TYEG tryptone yeast extract glucose - O.D. optical density - Y _ATP molar ATP yield - G+C guanosine plus cytosine     

Desulfomonile tiedjei gen. nov. and sp. nov., a novel anaerobic,dehalogenating, sulfate-reducing bacterium

An anaerobic, dehalogenating, sulfate-reducing bacterium, strain DCB-1, is described and nutritionally characterized. The bacterium is a Gram-negative, nonmotile, non-sporeforming large rod with an unusual morphological feature which resembles a collar. The microorganism reductively dehalogenates meta substituted halobenzoates and also reduces sulfate, sulfite and thiosulfate as electron acceptors. The bacterium requires nicotinamide, 1,4-naphthoquinone and thiamine for optimal growth in a defined medium. The microorganism can grow autotrophically on H₂:CO₂ with sulfate or thiosulfate as terminal electron acceptors. It can also grow heterotrophically with pyruvate, several methoxybenzoates, formate plus sulfate or benzoate plus sulfate. It ferments pyruvate to acetate and lactate in the absence of other electron acceptors. The bacterium is inhibited by MoO _inf4 ^sup2- or SeO _inf4 ^sup2- as well as tetracycline, chloramphenicol, kanamycin or streptomycin. Cytochrome c₃ and desulfoviridin have been purified from cells grown in defined medium. 16S rRNA sequence analysis indicates the organism is a new genus of sulfate-reducing bacteria in the delta subdivision of the class Proteobacteria. We propose that the strain be named Desulfomonile tiedjei.Non-standard abbreviations PIPES piperazine-N,N-bis[2-ethanesulfonic acid] - MES 2-[N-morpholino]ethanesulfonic acid - TES N-tris[hydroxymethyl]methyl-2-aminoethanesulfonic acid - HQNO 2-N-heptyl-4-hydroxy-quinoline-N-oxide - CCCP carbonyl-cyanide-m-chlorophenylhydrazine - CM carboxymethyl     

Human thrombins. Production, evaluation, and properties of alpha-thrombin.

Human alpha-thrombin, the thromboplastin activation product of prothrombin with high clotting and esterase activity, was produced from Cohn Fraction III paste. The procedure started with 0.4 to 3.2 kg of frozen paste and was completed in 2 or 3 days. Some 23 g of thrombin were recorded for 65 quantitated preparations made from 11 lots of Fraction III paste. These preparations were obtained at protein concentrations of 3.9 +/- 1.3 mg/ml with a yield of 340 +/- 110 mg/kg of paste, which represented 48 +/- 14% of the clotting potential extracted as prothrombin. They had specific clotting activities of 2.8 +/- 0.4 U.S. (NIH) units/microng of protein and titrated to 88 +/- 8% active with p-nitrophenyl-p'-guanidinobenzoate (NPGB). Those (N - 29) examined by labeling with [14C]diisopropyl phosphorofluoridate (iPr2P-F) and electrophoresing in sodium dodecyl sulfate (SDS)-polyacrylamide gels were found to contain only (N = 4) or predominantly alpha-thrombin (97 +/- 3%) and corresponding amounts of ists degradation product, beta-thrombin (2.6 +/- 3.1%). No plasmin(ogen), prothrombin complex factors (II, VII, IX, IXalpha, X, Xalpha), or prothrombin fragments were detected in representative preparations. As produced in 0.75 M NaCl, pH approximately 6, thrombin was stable for approximately 1 week at 4 degrees and for greater than 1 year at less than or equal to 50 degrees; freeze-dried thrombin stored at 4 degrees for greater than 1 year displayed stable clotting activity and no vial to vial variation, permitting its use for reference purposes. Human thrombin generated by Taipan snake venom activation was compared with that produced by rapid thromboplastin activation: after treatment with [14C]iPr2P-F, greater than 95% of the label in both thrombins migrated at the same rate during electrophoresis in SDS; identical pairs of NH2-terminal residues were released in three consecutive Edman degradation cycles.     

Ulaancricetodon badamae n. gen., n. sp. (Mammalia, Rodentia, Cricetidae) from the Valley of Lakes in Central Mongolia

The smallest and most primitive Oligocene cricetid,Ulaancricetodon badamae n. gen., n. sp. is described from the Hsanda Gol Formation in Mongolia. The fossils were recovered from stratified fossil horizons immediately below and above a basalt layer dated at 31.5 Ma (⁴⁰Ar/³⁹Ar-data), that is an Early Oligocene age. Although the dental formula is muroid (1-0-0-3/1-0-0-3), the tooth morphology and tooth size ofUlaancricetodon badamae n. gen., n. sp. point to a close relationship with the zapodidHeosminthus Wang 1985, which is known from the Asian Late Eocene to Early Oligocene.     

Micropropagation of a fruit tree, Morus australis Poir. syn. M. acidosa Griff.

High frequency bud break and multiple shoots were induced in nodal explants collected between November to February from a 5 year old tree of Morus australis Poir syn. M. acidosa Griff. on Murashige and Skoog's medium supplemented with 6-benzylaminopurine (1.0 mg/1). Incorporation of gibberellic acid (0.3 mg/l) along with BAP (1.0 mg/l) not only induced faster bud break from nodal explants as well as from apical shoot buds, but it also enhanced the frequency of bud break. Nodal explants were more responsive than apical shoot buds. The shoots formed in vitro were multiplied further as nodal segments, and an average multiplication rate of 6-fold per subculture was established within 4–5 months. The shoots were successfully rooted on half-strength MS containing a combination of indole-3-acetic acid, indole-3-butyric acid and indole-3-propionic acid, each at 1.0 mg/1. The plantlets were successfully hardened off and established in natural soil.Abbreviations BAP 6-benzylaminopurine - GA₃ gibberellic acid - KN kinetin - IAA indole-3-acetic acid - IBA indole-3-butyric acid - IPA indole-3-propionic acid - MS Murashige and Skoog (1962) medium - NAA 1-naphthalene acetic acid     

Studies of the genus Enchodelus Thorne, 1939 (Nematoda, Nordiidae) from Arctic polar deserts. 1. Species with long odontostyle: E. makarovae sp. n. and E. groenlandicus (Ditlevsen, 1927) Thorne, 1939, with an identification key to the species of the E. macrodorus group

Two nematode species of the genus Enchodelus Thorne, 1939, one new and one known from Arctic polar deserts were studied. Enchodelus makarovaesp. n. is an amphimictic species, characterised by females with body length of 1.57-2.00 mm, lip region 15-17.5 μm wide, amphid duplex, odontostyle 38-43 μm long or 2.3-2.8 times lip region diam. Odontophore with flanges, 1.2-1.4 times as long as odontostyle; pharynx length 320-377 μm, pharyngeal expansion 113-130 μm long or 32-37% of total pharynx length; female genital system amphidelphic, uterus tripartite, pars refringens vaginae with two trapezoid sclerotisations, vulva a transverse slit (V=45-51%); tail bluntly conoid (25-35 μm, c=45.8-70.3, c'=0.6-0.9 in females, and 29-33 μm, c=46.4-58.9, c'=0.7-0.8 in males). Males with 65-74 μm long spicules and 10-12 spaced ventromedian supplements. Additional information for Enchodelus groenlandicus is provided, this being a new geographic record for the Putorana Plateau, Russian Arctic.     

Mucronustyrene,mucronulastyrene and villostyrene,cinnamylphenols from Machaerium mucronulatum and M. villosum

The wood of Machaerium mucronulatum contains, in addition to chalcones and isoflavonoids, the cinnamylphenols mucronustyrene[E-1-(4-hydroxy-2,3-dimethoxybenzyl)-2-phenylethylene], mucronulastyrene[Z-1-(4-hydroxy-2,3-dimethoxybenzyl)-2-phenylethylene] and villostyrene [Z-I-(4-hydroxy-2,3-dimethoxybenzyl)-2-(2-methoxyphenyl)-ethylene. Isoflavonoids and villostyrene were also found in the heartwood of M. villosum. The structural determination of the cinnamylphenols relied on spectra, degradations and syntheses.     

Thermodynamics of hydrolysis of disaccharides. Lactulose, alpha-D-melibiose, palatinose, D-trehalose, D-turanose and 3-o-beta-D-galactopyranosyl-D-arabinose

High-pressure liquid chromatography and microcalorimetry have been used to study the thermodynamics of the hydrolysis reactions of a series of disaccharides. The enzymes used to bring about the hydrolyses were: beta-galactosidase for lactulose and 3-o-beta-D-galactopyranosyl-D-arabinose; beta-glucosidase for alpha-D-melibiose; beta-amylase for D-trehalose; isomaltase for palatinose; and alpha-glucosidase for D-turanose. The buffer used was sodium acetate (0.02-0.10 M and pH 4.44-5.65). For the following processes at 298.15 K: lactulose(aq) + H2O(liq) = D-galactose(aq) + D-fructose(aq), K0 = 128 +/- 10 and delta H0 = 2.21 +/- 0.10 kJ mol-1; alpha-D-melibiose(aq) + H2O(liq) = D-galactose(aq) + D-glucose(aq), K0 = 123 +/- 42 and delta H0 = -0.88 +/- 0.50 kJ mol-1; palatinose(aq) + H2O(liq) = D-glucose(aq) + D-fructose(aq), delta H0 = -4.44 +/- 1.1 kJ mol-1; D-trehalose(aq) + H2O(liq) = 2 D-glucose(aq), K0 = 119 +/- 10 and delta H0 = 4.73 +/- 0.41 kJ mol-1; D-turanose(aq) + H2O(liq) = D-glucose(aq) + D-fructose(aq), delta H0 = -2.68 +/- 0.75 kJ mol-1; and 3-o-beta-D-galactopyranosyl-D-arabinose(aq) + H2O(liq) = D-galactose(aq) + D- arabinose(aq),0H0 = 107 +/- 10 and delta H0 = 2.97 +/- 0.10 kJ mol-1.(ABSTRACT TRUNCATED AT 250 WORDS)     

Pro-(carboxypeptidases A) from whole pig pancreas. Their mass, size, shape and solvation.

Sedimentation analysis and light-scattering measurements were made with the two forms of pig pancreas pro-(carboxypeptidase A), in order to determine some of their physical properties. The following values were found (the first value applies to the binary complex and the second one to the monomer). The A 1%/280.1 cm values were 19.9 +/- 0.3 and 16.3 +/- 0.3. The partial specific volumes v -0 were 0.707 +/- 0.016 cm3/g and 0.714 +/- 0.015 cm3/g. The sedimentation coefficients S 0/20,w were 4.90 +/- 0.15S and 3.75 +/- 0.15 S. The diffusion coefficients D 0/20,w were (5.8 +/- 0.1) X 10(-7) cm2/s and (6.95 +/- 0.15) X 10(-7) cm2/s. From these data the following values were calculated. Relative molecular masses Mr were 71 000 +/- 4000 and 46 000 +/- 3000. The frictional ratios f/fmin. were 1.37 +/- 0.06 and 1.31 +/- 0.07; assuming a value for the solvation of the molecules (delta = 0.5 g/g) the asymmetry values range from 3 to 5 for the binary complex and from 2 to 4 for the monomer. The Mr values found in the present work coincide with those found by means of polyacrylamide-gel electrophoresis in the presence of sodium dodecyl sulphate [Martínez, Avilés, SanSegundo & Cuchillo (1981) Biochem. J. 197, 141-147]. Therefore the low values obtained by those authors when using gel-filtration chromatography must be the result of the interaction of the zymogens with the gel matrix, as the asymmetry is too small to justify the large discrepancies found.     

Eimeria Caprovina Sp. N. From the Domestic Goat, Capra Hircus, From the Usa

Oocysts of Eimeria caprovina sp. n. from the domestic goat, Capra hircus , are ellipsoidal, subspherical or slightly ovoid, usually flattened at the micropylar end. They measure 29.7 (26-36) × 23.7 (23-28) μ. the sporocysts are elongate ovoids, measuring 14.3 (13-17) × 8.3 (8-9) μ. with Stieda bodies at the narrow ends. the oocyst wait is 1.6 μ thick, smooth, dark-brown to brownish-yellow, and 2-layered. A micropyle. 6.2 (4-10) μ in diameter, polar granule, and sporocyst residuum are present: micropylar cap and oocyst residuum are absent.