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25.       During neutrophil cell migration or chemotaxis, Rac activation dominates at the front of the cell, here...

25.       During neutrophil cell migration or chemotaxis, Rac activation dominates at the front of the cell, here Rac functions to...

A.         directly bind GPCRs

B.         promote Arp2/3 activity downstream of WASp family proteins

C.        promote actin-myosin contraction

D.        activate Rho GTPases

E.         none of the above

Answer _________

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