Immunogenetic studies on microorganisms
نویسندگان
چکیده
منابع مشابه
Immunogenetic Studies of Species
NE of the most specific means of analyzing relationships among spe0 cies is the assay of the similarity of their proteins by precipitin reactions. Such a method was first extensively used by NUTTALL (1904), and following his work, many investigators have used immunological technics in comparable studies. Usually the criterion for distinguishing species by the precipitin test has been of a quant...
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The fine structure of cells of Saccharomyces cerevisiae engaged in the formation of ascospores was studied in electron micrographs of ultrathin sections. Although the mode of the first reduction division could not be clearly determined, the second nuclear division appeared to proceed in a manner similar to that observed previously during vegetative division. That is, division by constriction of...
متن کاملCholine anitmetabolites. Studies in microorganisms.
We have described previously (1) the study in vitro of a series of analogues and homologues of choline as substrates for the enzyme choline dehydrogenase. These compounds consisted of methylated and ethylated products, both simple and mixed, of ethanolamine, 1-aminopropanol-3, 2-amino-2-methylpropanol-1, 1-aminopropanol-2, and 2-amino-2-methyl1,3-propanediol, together with the parent amines. Of...
متن کاملImmunogenetic Studies of Cellular Antigens: Individual Differences between Species Hybrids.
REVIOUS papers from this laboratory have dealt with segregation of antiP genic characters of the red blood cells, peculiar to one or the other of the parental species, in hybrids from matings between Pearlneck (S t rep tope lk chinensis) and Ring dove (St. risoria) , Pearlneck and Senegal (St. senegalensis), and others. The use of the immunological technics described in these papers gave result...
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Resistance to pathogens has been measured directly in several organisms by examining single-copy major histocompatibility complex (MHC) genes (1, 2). However, some MHC genes are found in multiple, tightly linked copies, as expected from gene duplication. Wegner et al. (3) reported that for a class IIB MHC gene with a variable number of copies (three to nine copies in different individuals) in t...
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ژورنال
عنوان ژورنال: The Japanese Journal of Genetics
سال: 1955
ISSN: 0021-504X,1880-5787
DOI: 10.1266/jjg.30.262