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 Input:
 Although the enhanced NK cell activity and LDCC were closely associated with high levels ( greater than 31 fmol / mg ) of estrogen receptor ( ER ) content in the primary tumor , no other clinical or histologic correlation between the increase in either parameter of cytotoxic effector cell function could be found .

Ex Output:
estrogen receptor


Ex Input:
 OBJECTIVE : Tumor necrosis factor - alpha ( TNF - alpha ) induces a variety of cellular responses , some of them being at least seemingly contradictory .

Ex Output:
TNF - alpha


Ex Input:
 Transcription factor B - cell - specific activator protein ( BSAP ) is differentially expressed in B cells and in subsets of B - cell lymphomas .

Ex Output:

Transcription factor