conglutinin

noun
con·​glu·​ti·​nin | \ kən-ˈglüt-ᵊn-ən, (ˈ)kän- How to pronounce conglutinin (audio) \

Medical Definition of conglutinin

: a heat-stable protein of bovine serum that combines with red blood cells which have been treated with antibody and that causes rapid strong agglutination followed by lysis