the abilities of intact staphylococcus aureus h , crude cell walls ( ccw ) , purified cell walls ( pcw , peptidoglycan [ pg ] and covalently linked teichoic acid ) , peptidoglycan , and cell membranes ( cm ) to activate the complement system in normal human serum , c2-deficient serum , and immunoglobulin-deficient serum were compared .
C0009498
complement
C0229671
serum