In response to a chemotactic signal, a cell forms structures to aid in locomotion. In lamellipodia, active Rac will stimulate F-actin polymerization at the leading edge via _____, whereas actin that will form stress fibers will be recruited by formin downstream of activation of this small GTPase _____.

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#Question id: 1748

#Unit 4. Cell Communication and Cell Signaling

Which of the folllowing is a cytokine receptor that is a member of the hematopoietin receptor family?

TLS Online TPP Program

#Question id: 1749

#Unit 4. Cell Communication and Cell Signaling

The αβ heterodimeric form of the IL-2 receptor:

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#Question id: 1750

#Unit 4. Cell Communication and Cell Signaling

IFNγ and TNF (TNFα) can act synergistically:

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#Question id: 1751

#Unit 4. Cell Communication and Cell Signaling

Which of the following is characteristically produced by the Th2 CD4 cells which provide help for antibody production, but not by Th1 cells?

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#Question id: 1752

#Unit 4. Cell Communication and Cell Signaling

Dendritic cells can be driven from a resting state to an activated state by the T-cell surface molecule:

TLS Online TPP Program

#Question id: 1753

#Unit 4. Cell Communication and Cell Signaling

In the germinal center, B-cells become memory cells under the influence of: