Disposition of oxytetracycline in pigs after I.m. administration of two long-acting formulations Lees, P.; Gettinby, G.; Toutain, P.L. Journal of Veterinary Pharmacology and Therapeutics 25(3): 237-238 2002 0140-7783 10.1046/j.1365-2885.2002.00409.x https://eurekamag.com/research/068/764/068764374.php