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Detection of anti-P. brasiliensis antibodies by the LA test in the sera of 51 patients with PCM and 95 controls, including patients with histoplasmosis (HP), aspergillosis (ASP), and nonfungal diseases (bacterial infection [BI]) and healthy subjects (NHS). (A) Screening test of the undiluted sera. (B) The titer is reported as the highest dilution showing a 2+ or greater reaction. P, nondiluted sera; N, negative. The long, fine line represents the cutoff point (1+).
