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]:  Corresponding enzymatic activity was detectable only for 17 - hydroxysteroid dehydrogenase and 5alpha - reductase , respectively producing testosterone and 5alpha - dihydrotestosterone .
[A]: 5alpha - reductase


[Q]:  Retinoic acid up - regulates myeloid ICAM - 3 expression and function in a cell - specific fashion - - evidence for retinoid signaling pathways in the mast cell lineage .
[A]: ICAM - 3


[Q]:  OBJECTIVE : To examine whether inhaled nitric oxide ( NO ) affected the intrapulmonary production of NO , reactive oxygen species , and nuclear factor - kappaB in a lipopolysaccharide ( LPS ) - induced model of acute lung injury .
[A]:
nuclear factor