By Jan Klein (auth.)
Somewhere I heard a narrative of a bridge and a painter. The bridge was once huge, immense and used to be made all of steel, and the painter's task was once to maintain it from rusting. He could commence at one finish and slowly continue, daily, month through month, towards the opposite finish, portray the bridge. yet no faster might he end with the portray than the bridge could start to rust back. The rust, too, could commence at one finish and slowly continue towards the opposite finish, systematically destroying the painter's activity. And so the painter might go back to the place he had begun, and start portray back, slowly continuing towards the opposite finish of the bridge, continuously only one step sooner than the rust. And if the tale is correct, the painter may perhaps nonetheless be portray that bridge-a sleek Sisyphus! in the course of the writing of this ebook, the tale of the painter and his bridge saved coming to brain. the sector the e-book covers has been constructing so swiftly that, just like the painter, I too needed to go back to the place I had begun and struggle the rust of obsolescence. yet in contrast to the painter, I had a time limit to fulfill, which constituted some extent of no go back. And so, sending off this manuscript, i've got no selection yet to monitor the end result of my recreation be overtaken through the rust.
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Extra info for Biology of the Mouse Histocompatibility-2 Complex: Principles of Immunogenetics Applied to a Single System
The probability of selecting in the first generation two animals homozygous at 98 percent of the originally heterozygous loci is negligible. 2. Nomenclature The symbols designating the individual inbred strains of the mouse consist of letters (capital or small) and/or numerals (Arabic or Roman). The reasons for choosing a particular symbol are often peculiar. For example, in the BALB/c symbol, the BALB stands for Bagg's albino, and the c is the gene for albinism; I Lathrop, ~--Grandby, 1903-1915 I English fanciers I Japanese fanciers l fanciers"""Dunn _ _ _ 1928 1909 1m 1947 C57BR/cd (k) -- I , L~ba .
If more complicated mating systems are used, the time is even longer. However, the development can be hastened by a combination of serological typing and skin grafting (Egorov and Zvereva 1967). In this case, the positive animals in each backcross generation are grafted with skin derived 33 The Mouse and Its Forms Table 2-7. 6 from the F 1 hybrids (in this particular situation the donor strain must also be inbred). For further matings, animals rejecting the skin grafts most rapidly are used. These animals are presumed to differ from the F 1 hybrid more than those showing prolonged survival of the F 1 grafts and thus to resemble closely the background strain.
Association Analysis in a Heterogeneous Population A heterogeneous population consists of genetically different individuals sharing some antigens and differing in others. Immunization between two such individuals leads to production of an antiserum containing a number of different antibodies against antigens of one or more systems (poly specific antiserum). A polyspecific antiserum, when tested against a random sample (panel) of individuals, reacts with some individuals and fails to react with others.