FIG. 3.

T-cell proliferative responses in Lewis rats. (a) Responses of splenic lymphocytes from rats immunized with rM5 to individual peptides. (b) Responses of splenic lymphocytes from rats immunized with individual M5 peptides to the full-length rM5 protein. (c) Responses of splenic lymphocytes from rats immunized with peptide M5-B.6. Results are expressed as stimulation index (SI), calculated as mean test CPM/mean medium control CPM. Error bars represent standard errors (SEMs). Broken line indicates significant proliferative response cutoff value (SI = 3).