instruction:
In this task, you are given a sentence. You are expected to recognize the name of gene or protein. Although there might be several correct answers, you need to write one of them.
question:
 T cells retained their physical parameters as measured by forward and side light scatter , and functional activity as measured by costimulation of proliferation and IL - 2 production after being scraped off this substrate .
answer:
IL - 2


question:
 In transfection studies , either constitutively active Vav or Rac could complement constitutively active calcineurin to activate NF - AT - dependent transcription .
answer:
NF - AT


question:
 Multiple signals required for cyclic AMP - responsive element binding protein ( CREB ) binding protein interaction induced by CD3 / CD28 costimulation .
answer:

CD3 / CD28