Detailed Instructions: 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: First , we found that TGF - beta1 significantly increases endogenous germ - line ( GL ) alpha transcripts by LPS - stimulated CH12 . LX . 4933 ( mu ( + ) ) B lymphoma cells .
A:
TGF - beta1