Asparagine Broth, Granulated (Coccidiodin and Histoplasmin Broth, Granulated) is recommende for the preparation of Coccidioidin and Histoplasmin antigens for immunodiagnostic work. The amino acid asparagine, favours the synthesis of antigens from Histoplasma and Coccidiodes . Salts included in the medium buffer the medium well. Dextrose and slightly acidic pH of the medium helps for the luxuriant growth of the fungi.