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51.
A fluorometric methods is described for determination of cardiac and urinary 3-methoxytyramine, a metabolite of dopamine. Methoxy metabolites were isolated on Amberlite CG-50 resin and oxidation to emitter form was performed with K3Fe(CN)6. Good specificity and sensitivity of determination, and a high recovery of 3-MT were obtained. 相似文献
52.
A. Wiercińska 《International Journal of Anthropology》1986,1(3):277-280
The traditional cranioscopic traits possess undoubted taxonomic value in interpreting interpopulational relationships. However,
there is a lack of studies on the correlations between particular traits. In order to fill this gap, the following set of
4 traits was analysed by use of the multiple stachastic correlations method of Wanke: 1. prominence of maxilla, 2. lower margin
of nasal aperture, 3. depth of canine fossa and 4. depth of maxillary incisure. These traits were examined by use of the photographic
scales of Michalski within the series of 104 crania from a local population of Wislica, Poland, dated to the Early Medieval
Period. The significant associations appeared in the combinations 1–2, 1–3, 3–4, 1–2–3, 1–2–4, 1–3–4, 2–3–4 and 1–2–3–4. After
removal of all the possible interactions, still significant associations remained in 1–2–4, 2–3–4, and 1–3–4. Moreover, the
places of significant surpluses appeared in the extreme places, i.e. those characterising the Europoid and Mongoloid crania. 相似文献
53.
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58.
Ewa Bartkowiak 《TAG. Theoretical and applied genetics. Theoretische und angewandte Genetik》1971,41(7):320-326
Summary The results presented indicate that the sex determination mechanism in the Texas race ofR. hastatulus 2n = 10 (XX + 8A); 2n = 10 (XX + 8A)] is intermediate between theX/Y andX/A systems. In this race, sex is determined to some extent by theX/A balance, but theY chromosome also affects sex expression, maleness or intersexuality being correlated with different ratios ofX andY chromosomes.The results obtained for the Texas race are fully compatible with data presented by Smith (1963) for the North Carolina race [ 2n = 8 (XX + 6A); 2n = 9 (XX
1
Y
2 + 6A)]. It may be concluded that evolution of the karyotype in this species is not accompanied by changes in the mechanism of sex determination. 相似文献
59.
60.
B. Bilińska 《Histochemistry and cell biology》1989,93(1):105-110
Summary Effect of LH, vinblastine and cytochalasin B on the cytoskeleton of cultured Leydig cells was investigated using monoclonal antibodies and fluorescence microscopy. After LH addition and treatment with cytoskeletal disrupting drugs, three main effects were observed: 1) increase of androgen level secreted by cultured mouse Leydig cells, 2) changes of cell-shape towards regular and rounded, 3) increase of 5,3-HSD activity. The results are discussed in respect to possible involvement of cytoskeleton in the regulation of steroidogenesis. 相似文献