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]:  Little is known , however , about the functions of PPAR - gamma in the immune system , especially in T lymphocytes .
[A]: PPAR - gamma


[Q]:  The present study first shows that OX40 - gp34 interaction stimulates HIV - 1 expression and suggests that OX40 triggering by gp34 may play an important role in enhancing HIV - 1 production in both acutely and latently infected CD4 ( + ) T cells in vivo .
[A]: HIV - 1


[Q]:  Cytotoxic T lymphocytes directed against well - characterized epitopes of EBV latency genes represent an already successful and promising therapeutic approach to EBV - associated lymphomas , in particular PTLDs
[A]:
EBV latency genes