title: An activator of C'ls to C'l esterase in the macroglobulin fraction of human sera.
mesh_terms: D000799:Angioedema / Q000097:blood* / Q000201:enzymology* / Q000235:genetics; D000818:Animals; D002850:Chromatography, Gel; D003165:Complement System Proteins; D004492:Edetic Acid; D004586:Electrophoresis; D004950:Esterases / Q000037:antagonists & inhibitors / Q000097:blood*; D006801:Humans; D008259:Macroglobulins; D011817:Rabbits
chemical_list: D008259:Macroglobulins; D003165:Complement System Proteins; D004492:Edetic Acid; D004950:Esterases