title: Penicillin and streptomycin precursors; their probable source and derivation.
mesh_terms: D006801:Humans; D010166:Palliative Care; D010406:Penicillins / Q000096:biosynthesis* / Q000378:metabolism*; D011336:Probability; D013307:Streptomycin / Q000096:biosynthesis* / Q000378:metabolism*
chemical_list: D010406:Penicillins; D013307:Streptomycin
keywords: PENICILLIN/production; STREPTOMYCIN/production