title: Antibiotics. Microbiological assay of spectinomycin in feed: collaborative study.
mesh_terms: D000821:Animal Feed / Q000032:analysis*; D000818:Animals; D001681:Biological Assay; D004926:Escherichia coli / Q000254:growth & development; D005069:Evaluation Studies as Topic; D005503:Food Additives / Q000032:analysis; D008832:Microchemistry; D000198:Spectinomycin / Q000032:analysis* / Q000494:pharmacology; D013552:Swine
chemical_list: D005503:Food Additives; D000198:Spectinomycin