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:
 Recent studies have increasingly implicated the proteasome in the regulation of cell surface receptors .
answer:
cell surface receptors


question:
 We have established optimal conditions for the measurement of glucocorticoid receptors ( GR ) in human white cells using a whole - cell binding assay with [ 3H ] dexamethasone as the ligand , and the subsequent determination of the GR content in normal human lymphocytes and in leukemic cells of patients with various forms of acute and chronic leukemia .
answer:
glucocorticoid receptors


question:
 MATERIALS AND METHODS : The cells were stimulated by 100 ng / mL TPO and / or 100 ng / mL TGF - beta1 and analyzed for proliferation ( 3H thymidine incorporation ) , viability ( trypan blue exclusion ) , and protein expression and phosphorylation ( Western blot ) .
answer:

TGF - beta1