Detailed Instructions: 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 transfection studies , either constitutively active Vav or Rac could complement constitutively active calcineurin to activate NF - AT - dependent transcription .
A:

Show your work and conclude with the exact phrasing "Therefore, the final answer is [answer]." where [answer] is just the final number or expression that solves the problem.
user
NF - AT