Previous observations have shown that the major histocompatibility (B)
complex is a determinant of the growth of v-src-induced primary tumor
s. In the present study, we have observed with two chicken lines conge
nic for B complex alleles that the control of v-src-mediated oncogenes
is by the B complex extends to metastasis formation. In addition, our
results show that the differences in metastasis frequencies between th
ese two lines are correlated with the relative strengths of their resp
ective tumor immune responses. (C) 1994 Academic Press, Inc.