FIG. 3.

Lymphocytes from rM6-immunized rats proliferate in the presence of human cardiac myosin. Lymphocytes from inguinal and popliteal lymph nodes of rats immunized and boosted with 500 μg of rM6 were reacted with human cardiac myosin (HCM), rabbit skeletal myosin (RSM), and actin in the tritiated thymidine incorporation assay as described in Materials and Methods. Values represent the SI (mean of test cpm/mean of medium control cpm). Medium controls in the proliferation assays ranged from 2,000 to 5,000 cpm.