glycerin broth
1tuberculin — 1. A glycerin broth culture of Mycobacterium tuberculosis evaporated to 110 volume at 100°C and filtered; introduced by Robert Koch for the treatment of tuberculosis but now used chiefly for diagnostic tests; originally known as Koch old t. (OT)… …
2old tuberculin — n tuberculin prepared by boiling, filtering, and concentrating a broth culture of tubercle bacilli and orig. introduced as a proposed curative agent for tuberculosis but now used in skin tests to detect tubercular infection * * * (OT) [USP] a… …
