Abstract
Recent studies suggest that the gene locus controlling the fate of tumors induced by Rous sarcoma virus (RSV) is linked to theB histocompatibility complex. Birds carrying the dominant allele regress the tumor; homozygous recessives being unable to do so, develop large tumors and die. These are called progressors.
The Bryan strain of RSV was inoculated into 220 6 week old Leghorns homozygous forB 1 B 1,B 2 B 2, orB 19 B 19 of which the percentages of progressors were 79, 22 and 56, respectively. The balance of each were regressors and survived.
TheB 1 B 1 test birds were derived from special matings, i.e., high and low immune responders to the amino acid polymer, GAT. Of 67 tests progeny of theB 1 B 1 GAT-low mating, 63 or 94% proved to be progressors, and 6% were regressors. Of 84 test progeny of theB 1 B 1 GAT-high matings, 67% were progressors, and 33% were regressors. The difference between the high and low GAT responders is highly significant and indicates that the locus controlling the fate of RSV-induced tumors is closely linked to the locus controlling immune response to GAT. The latter maps within theIr region of theB histocompatibility complex.
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Gebriel, G.M., Pevzner, I.Y. & Nordskog, A.W. Genetic linkage between immune response to GAT and the fate of RSV-induced tumors in chickens. Immunogenetics 9, 327–334 (1979). https://doi.org/10.1007/BF01570428
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DOI: https://doi.org/10.1007/BF01570428