to obtain purified h and m antigens suitable as primary standards in the serological diagnosis of histoplasmosis by agar gel double-diffusion tests , h and m reactive components of histoplasmin were fractionated by column chromatography by using sephadex g-100 , sephadex g-200 , and diethylaminoethyl cellulose .
C0019655
histoplasmosis
C0019654
histoplasmin