Figure 4

Acid phosphatase in spleen protein extracts from BCG-infected wild-type and nos2-deficient mice. Spleens from wild-type and nos2-deficient mice were collected 4 weeks after BCG infection. Results are expressed as means of the OD (570 nm) ± sem from four different samples per group. Spleen acid phosphatase activity from uninfected wild-type and nos2-deficient mice were similar (wild-type: 0.506 ± 0.047; nos2-deficient: 0.487 ± 0.011); these values were subtracted from the presented data). Experimental groups were statistically significant, p < 0.05.