The stoichiometric measurement of the serum inhibition of the first component of complement by the inhibition of immune hemolysis.
D000799:Angioedema / Q000097:blood / Q000276:immunology; D000818:Animals; D003165:Complement System Proteins / Q000032:analysis; D004950:Esterases / Q000037:antagonists & inhibitors; D006168:Guinea Pigs; D006461:Hemolysis; D006801:Humans; D007120:Immunochemistry; D005779:Immunodiffusion; D007700:Kinetics; D008433:Mathematics
D003165:Complement System Proteins; D004950:Esterases