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Detection of circulating antigen in sera from patients with PCM or with other mycoses and in normal human sera by inh-ELISA. Groups studied: 1, PCM (n = 81); 2, cryptococcosis (n = 20); 3, histoplasmosis (n = 33); 4, normal human sera (n = 93). Bars represent the mean antigen concentration for each group. The long, fine line represents the cutoff point (1.35 μg/ml).
