ACE and histoplasmosis: Bacterial and fungal cultures and immunological testing for syphilis (VDRL) were negative, as were those for human T lymphotropic virus I (HTLV-I), herpes simplex virus, varicella-zoster virus, cytomegalovirus, HIV1/2 antibodies, angiotensin-converting enzyme level (ACE), histoplasmosis, and Cryptococcus antigen latex agglutination.