The effect of antibiotic feed supplementation on thyroid size and activity in the albino rat.
D000818:Animals; D000900:Anti-Bacterial Agents; D002751:Chlortetracycline / Q000494:pharmacology*; D019587:Dietary Supplements; D010406:Penicillins / Q000031:analogs & derivatives; D051381:Rats; D013961:Thyroid Gland / Q000187:drug effects*
D000900:Anti-Bacterial Agents; D010406:Penicillins; D002751:Chlortetracycline
CHLORTETRACYCLINE/effects; PENICILLIN/related compounds; THYROID GLAND/effect of drugs on