Chymase Alternative name for chymosin ["chymase ." A Dictionary of Food and Nutrition. . Encyclopedia.com. 25 Aug. 2022 https://www.encyclopedia.com] Mast Cell Chymase and Tryptase and some MMPs Chymase and tryptase are packaged in secretory granules together with histamine and other mediators in mast cells, which are infiltrated in rheumatoid synovium. Chymase is a chymotrypsin-like