Survival curves of mice infected with C. albicans strains differing in MTL configuration or ploidy. The mice were infected as described in Materials and Methods. A. SC5314 (MTLa/α), 4448 (MTLa/a), 4449 (MTLα/α), and 4450 (MTLa/a/α/α). The data from two separate experiments involving the same strains were combined. B. CAI-4.URA (MTLa/α) and 3832 (MTLa/a/α/α). The data from two separate experiments involving 3832 were combined. C. 1035 (MTLa/α), 3567 (MTLa/a), 3568 (MTLα/α), and 3148 (MTLa/a/α/α).