“ Bestatin , however, … arginine aminopeptidase activity in control fibroblasts and only partially in TGF-β1-treated fibroblasts at 100 μmol/L. Our data suggest that both alanine … are involved in the reversal of the angiotensin II-stimulated collagen gel contraction in control and TGF-β1-treated cardiac fibroblasts or myofibroblasts.”