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:
The activation of this signaling pathway requires functional CD4 receptors and is independent of binding to CXCR4 .

Ex Output:
CD4 receptors

Ex Input:
CONCLUSION : Taken together , these data suggest that TGF - beta1 modulates TPO - mediated effects on megakaryocytic proliferation by interfering with TPO - induced signal transduction , particularly by reducing the activities of MAPK ERK1 / ERK2 and STAT5 .

Ex Output:
TGF - beta1

Ex Input:
Lymphocyte glucocorticoid receptor binding in depression : normal values following recovery .

Ex Output:
glucocorticoid receptor