instruction:
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.
question:
 BLyS binding to B cells is specific as other TNF family members tested did not compete for ( 125 ) I - BLyS binding .
answer:
TNF family members


question:
 It has been previously reported that IL - 2 release in activated Jurkat T requires caspase - like activity ( Posmantur et al . ( 1998 ) Exp . Cell . Res . 244 , 302 - 309 ) .
answer:
IL - 2


question:
 Peripheral blood T cells and monocytes and B cell lines derived from patients with lupus express estrogen receptor transcripts similar to those of normal cells .
answer:

estrogen receptor