ARG1 and infection: Injection of a similar number of cryptococcal cells per infection group was confirmed by using quantitative culture: 0.97 × 106, 0.87 × 106, 1.37 × 106, and 1.06 × 106 colony-forming units (CFU) for WT, arg1Δ, dkArg1#29, and dkArg1#74, respectively.