Regarding complement
A. C5a is an important opsonising molecule.
B. C3b has chemotactic function.
C. it cannot cause cytolysis of bacteria in the absence of immune complexes.
D. C3a may cause mast cell degranulation.
E. may be activated by prostaglandins
Isha@2663 Answered question August 19, 2024
A. False: C5a is not an opsonizing molecule; it is a chemotactic factor. B. False: C3b is involved in opsonization, not chemotaxis. C. True: Complement needs immune complexes for effective cytolysis. D. True: C3a can cause mast cell degranulation. E. False: Prostaglandins do not activate the complement system.
Isha@2663 Answered question August 19, 2024