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Non-H-2-linked control of in vivo growth of SJL/J-derived reticulum cell sarcoma in recombinant inbred strains between BALB/cKe and SJL/J mice.

This report investigated the growth of reticulum cell sarcoma (RCS) in several congenic and recombinant inbred strains between BALB/cKe female (H-2d) and SJL/J male (H-2s) mice. SJA20 mice congenic with SJL/J except at the Igh locus supported RCS growth. Recombinant mice of the H-2d haplotype did not support RCS growth. However, recombinant inbred mice of the H-2s haplotype varied in their susceptibility to permit RCS growth in vivo. These results supported the role of non-H-2 gene(s) controlling the growth of RCS. Since the recombinant strains of mice exhibited different immunologic characteristics and since RCS tumor growth depended on the ability of the mice to develop a strong antitumor proliferative response, the findings reported here suggested that non-H-2 genes control the magnitude of the syngeneic proliferative response and consequently regulate RCS growth in vivo.