Figure 1

Proliferation response of the lymphocytes isolated from C57BL/6 mice to different stimulators. The data are expressed as stimulus index (S.I.). In contrast to the single type allogeneic cell stimulated groups, the lymphocytes which encountered with two types of allogeneic cells exhibited a mild reaction to the stimulators (P = 0.047 vs. stimulators from C3H alone, and 0.139 vs. stimulators from BALB/c alone).