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:
 This effect was completely reversed by preincubation with a tyrosine phosphatase inhibitor ( Na3VO4 ) , which suggests that TGF - beta1 activated a phosphatase .
answer:
TGF - beta1


question:
 An assay for the quantitation of cytoplasmic and nuclear glucocorticoid receptors in lymphoid tissue has been developed using controlled pore glass ( CPG ) beads .
answer:
glucocorticoid receptors


question:
 OBJECTIVE : To identify and characterize estrogen receptor ( ER ) transcripts expressed in immune cells of patients with systemic lupus erythematosus ( SLE ) and healthy donors .
answer:

estrogen receptor