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#Question id: 15530


The activity of already differentiated effector and memory T cells is maintained by a receptor which are generally expressed on the memory and effector T cells. 

#Unit 4. Cell Communication and Cell Signaling
  1. IL-12
  2. B7 family (CD80/86)
  3. CD28
  4. ICOS

Answer:- Option(s): 4


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