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Virulence of ΔAfpmt1 mutant. Fifteen BALB/c mice were infected intranasally with 6 × 106 conidia as described in Materials and Methods. The survival of mice was determined. The wild-type strain (•), the ΔAfpmt1 mutant (○), the revertant (▵), and a mixture of the wild-type and mutant strains (▴) were compared.
