We have analyzed major histocompatibility complex (MHC) regulated immune re
sponse in congenic inbred chicken lines CB and CC, that differ from each ot
her not only at the B haplotype but also in their ability to regress Rous s
arcomas. The ratio of CD4+ to CD8+ peripheral blood lymphocytes is higher i
n CB chicken than in CC, as well as adherence potential of blood monocytes.
The analysis of keyhole limpet haemocyanin presentation did not show any d
ifference between these lines.