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.

Example Input:  Transient transfection assays indicated that the ( - 4551 ) UCP1 - CAT construct , containing the 5 ' - regulatory region of the rat ucp - 1 gene , was activated by PPARalpha co - transfection in a dose - dependent manner and this activation was potentiated by Wy 14 , 643 and retinoid X receptor alpha .
Example Output: retinoid X receptor

Example Input:  The protein kinase C inhibitor GF - 109203X abolished the activation by phorbol ester and inhibited the effect of CCK by 78 % but had no effect on EGF - activated MAPK activity .
Example Output: protein kinase C

Example Input:  They are growth - inhibited by TGF - beta1 .
Example Output:
TGF - beta1