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.

[Q]: In contrast to stimulation by cytokines , the activation of STAT1 in response to CD2 ligation is delayed and does not involve Jak kinases .
[A]: Jak kinases

[Q]: We found that leukemic LGL from 19 patients displayed high levels of activated STAT3 .
[A]: activated STAT3

[Q]: Residues Tyr357 and Tyr462 are contained within the loop regions of adjacent helix - loop - helix - like repeats within BAP / TFII - I .
[A]:
loop regions