FIG. 3.

Proliferative responses in P. berghei-immune splenocytes of BALB/c and C57BL/6 mice. Immune mice were obtained after immunization with irradiated P. berghei sporozoites. Immune splenocytes were stimulated with PfLSA-1-based peptides ex vivo at a concentration of 20 μg/ml. The results were expressed as SIs, and a value of more than 2.0 was scored as a positive result. Background counts per minute were 5,336 and 3,136 for BALB/c and C57BL/6 mice, respectively. The results shown are from a representative experiment performed more than three times.