FIG. 5.

Protective efficacy of T-cell-enriched spleen cell suspensions from C57BL/6 (open columns) or C57BL/10 (solid columns) mice infected for 2 or 4 weeks with M. avium compared to cells isolated from untreated animals. Recipient mice were sublethally irradiated C57BL/6 mice. Mycobacterial loads in the recipient animals were evaluated 32 days after infection and spleen cell transfusion. Data are shown as log₁₀ decrease in CFU (protection), calculated by subtracting the geometric mean in the immune groups from that of the nonimmune controls. Statistically significant protection (recipients of immune cells were compared to those receiving nonimmune cells) is labeled “∗” for P < 0.05 or “∗∗” for P < 0.01 (according to the ANOVA test).