The history of the "antibiotic growth effect".
D000821:Animal Feed / Q000592:standards; D000824:Animal Nutritional Physiological Phenomena; D000818:Animals; D000900:Anti-Bacterial Agents / Q000494:pharmacology*; D002417:Cattle; D002645:Chickens; D005856:Germ-Free Life; D006128:Growth / Q000187:drug effects*; D049673:History, 20th Century; D010406:Penicillins / Q000494:pharmacology; D013552:Swine; D013754:Tetracyclines / Q000266:history* / Q000494:pharmacology; D014805:Vitamin B 12 / Q000266:history
D000900:Anti-Bacterial Agents; D010406:Penicillins; D013754:Tetracyclines; D014805:Vitamin B 12