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.

[EX Q]:  Previous studies indicated that aspirin ( acetylsalicylic acid [ ASA ] ) can have profound immunomodulatory effects by regulating cytokine gene expression in several types of cells .
[EX A]: cytokine gene

[EX Q]:  Bone resorption is regulated by the immune system , where T - cell expression of RANKL ( receptor activator of nuclear factor ( NF ) - kappaB ligand ) , a member of the tumour - necrosis factor family that is essential for osteoclastogenesis , may contribute to pathological conditions , such as autoimmune arthritis .
[EX A]: nuclear factor

[EX Q]:  Lymphokine dependence of STAT3 activation produced by surface immunoglobulin cross - linking and by phorbol ester plus calcium ionophore treatment in B cells .
[EX A]:
surface immunoglobulin