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]:  p107 induction of E2F DNA binding was observed primarily in S phase cells coincident with the increase in p107 protein levels .
[A]: p107 protein


[Q]:  Avian EMILIN was extracted from 19 - day - old embryonic chick aortas and associated blood vessels and purified by ion - exchange chromatography and gel filtration .
[A]: Avian EMILIN


[Q]:  The program for myogenic differentiation is subject to negative control by several peptide growth factors and by the products of mutationally activated ras oncogenes , which persistently activate intracellular cascades normally triggered by specific growth factors .
[A]:
ras oncogenes