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31.
The use of induced primuline fluorescence led to the discovery of a new type of yeast scars (multiple scars) in the generaKloeckera, Saccharomycodes, Nadsonia andHanseniaspora. The structure and ultrastructure of their surface was studied by electron microscopy, using carbon replicas and isolated cell walls. 相似文献
32.
V. Chaloupecký 《Folia microbiologica》1964,9(4):232-237
- 1.It was found that growing cells always contained more different groups of ribosomes and their total amount was greater than in non-growing cells or spores, in which only two ribosome groups with different sedimentation constants, according to the species of microorganism, were consistently found. 相似文献
33.
Adolf Češka 《Folia Geobotanica》1966,1(3):93-100
Various possibilities of usingSörensen's coefficient of floristic similarity in plant sociology are summarized. A new formula (11), derived from that bySörensen and based on constancy values, is suggested in order to calculate the mean floristic similarity within a set of relevés. 相似文献
34.
Adolf Češka 《Folia Geobotanica》1966,1(2):93-100
Various possibilities of usingSörensen’s coefficient of floristic similarity in plant sociology are summarized. A new formula (11). derived from that bySörensen and based on constancy values, is suggested in order to calculate the mean floristic similarity within a set of relevés. 相似文献
35.
Changes in the radioresistance of bacteria after the inhibition of proteosynthesis in the preirradiation phase 总被引:2,自引:1,他引:1
The strain ofEscherichia coli WP2 (tryv) was irradiated with UV light, at a dosage of 240 erg/mm. Proteosynthesis was inhibited by the elimination of the essential
amino acid from the cultivation medium. Changes in radioresistance were followed during 45 minutes of starvation and during
the subsequent 45 minutes of restitution after the addition of the essential amino acid. The radioresistance of the cells
showed a linear increase immediately after the removal of the essential amino acids, proportional to the duration of the inhibition
of proteosynthesis. The increase in radioresistance was shown to be reversible. After the addition of the essential amino
acid there was an immediate decrease in radioresistance which was most marked in the first 15 minutes. 相似文献
36.
The existence of six amylase heterogeneity variants in serum and urine has been discovered in a group of 111 families with twins, and the frequence of each variant was determined. It had been shown that each of these amylase heterogeneity variants is inherited codominantly, and the mode of inheritance is demonstrated schematically.These amylase heterogeneity variants may be used as an aid to twin zygosity determination and also in paternity problems. 相似文献
37.
From the results obtained in the present work it is concluded that gamma globulin of the 7 S type (γG) which represents the main immunoglobulin component of pig colostrum, differs from serum γG globulin by the presence of another type of polypeptide chain, designed L2; the latter was detected after S-sulfonation in starch gel electrophoresis as the fastest moving component and its immunoelectrophoretic pattern shows the presence of two precipitating components. Preparation of soluble heavy and light chains enabled us to study them imunochemically. The heavy chain is represented by two zones; the fainter one was not detected in comparative analysis of the heavy chain of serum γG globulin. The L1 chain of colostral gamma globulin and the light chain of serum gamma globulin seem to contain three precipitating components, one of which appears due to aging of the chain solution in the presence of glycine. The material from colostrum seems to contain a larger amount of this component than serum. Further it was shown that the component arising in this way is antigenically closely related to the heavy chain. 相似文献
38.
R. Řetovský 《Folia microbiologica》1965,10(4):230-235
Colour tests for study of the nuclear apparatus ofChlorella cells are described. It can be concluded from the results thatChlorella cell nucleus contains a relatively large nucleolus; the peripheral layers of the nucleus are rich in chromatin only in the nuclear division phase. The nucleus divides by a simplified form of mitosis, characterized morphologically by simple constriction. 相似文献
39.
40.