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]: 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]: Suppression of lung inflammation in rats by prevention of NF - kappaB activation in the liver .
[EX A]: NF - kappaB

[EX Q]: Five normally cycling healthy women were given daily subcutaneous injections of human leukocyte interferon ( 3 X 10 ( 6 ) units / day ) from the 3rd through 23rd day of the menstrual cycle , and serum steroid and peptide hormone concentrations monitored at 3 - day intervals during the treatment and the preceding control cycle .
[EX A]:
human leukocyte interferon