FIG. 1.

Sizes of primary footpad lesions of BALB/c mice infected with L. mexicana or L. major. Results are from one representative experiment performed with 28 (L. mexicana) and 15 (L. major) animals and are expressed as means ± SEM. ∗∗, P < 0.001 (Student's t test, comparing L. mexicana and L. major infections). Three other experiments using 15, 16, and 12 animals infected with L. mexicana displayed similar results. This was also the case for another experiment including 10 mice infected with L. major.