In vitro effects of oxytetracycline on matrix metalloproteinase-1 mRNA expression and on collagen gel contraction by cultured myofibroblasts obtained from the accessory ligament of foals - Arnoczky, SP; Lavagnino, M; Gardner, KL; Tian, T; Vaupel, ZM; Stick, JA (Am J Vet Res, 2004)