C3 convertase protects normal cells from lysis by complement.
C3a is a decay-accelerating factor and causes the rapid decay and death of bacteria.
In general, gram-positive bacteria are more likely to be killed by complement than gram-negative bacteria.
The membrane attack complex is formed as a result of activation of the classic pathway but not by activation of the alternative pathway.
The first time a person is exposed to a microorganism, the alternative pathway of complement is more likely to be activated than the classic pathway.
To enhance antibody production
To inhibit immune complex formation
To opsonize viruses
To perforate bacterial cell membranes
To release histamine from mast cells
She has too little C1 inhibitor.
She has too little C3b.
She has too little factor B.
She has too much C5a.
She has too much C9.