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C3b attaches to host cell surface; complement regulatory proteins inactivate it

C3b attaches to bacterial surface ; complement regulatory proteins inactivate it

Figure 19.8 Avoiding the Alternative Pathway of Complement Activation

Some bacterial pathogens foil the activation of the complement system by carrying surface components that attach to host cell regulatory proteins.The regulatory proteins inactivate C3b that has bound to a surface.

Figure 19.8 Avoiding the Alternative Pathway of Complement Activation

Some bacterial pathogens foil the activation of the complement system by carrying surface components that attach to host cell regulatory proteins.The regulatory proteins inactivate C3b that has bound to a surface.

470 Chapter 19 Host-Microbe Interactions

C3b receptors on phagocyte
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