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:
 Fatty acids are ligands for peroxisome proliferator - activated receptor - gamma ( PPARgamma ) , and the upregulation of adipophilin mRNA by PPARgamma agonists like 15d - PGJ ( 2 ) and ciglitazone indicates that PPARgamma may mediate the induction of adipophilin expression in human blood monocytes .
answer:
adipophilin mRNA


question:
 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 .
answer:

HIV - 1