Which of the following statements about Complement is false?
A) Complement consists of a group of at least 20 plasma proteins that normally circulate in the blood in an inactive form.
B) Complement can be activated through three pathways: classical, secondary, and alternate.
C) The membrane attack complex consists of complement proteins C5b - C9. The MAC creates pores in target cell membranes.
D) Immune clearance, which involves C3b binding Ag-Ab complexes to red blood cells, and macrophages removing and destroying the Ag-Ab complexes in the liver and spleen, is the principle method of clearing foreign antigens from the blood stream.
Answer: B) complement can be activated through three pathways: classical, secondary and alternate
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