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.

Q:  NF kappa b signaling in posthypoxic endothelial cells : relevance to E - selectin expression and neutrophil adhesion .

A: E - selectin
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Q:  In contrast , 50 % downmodulation of HLA - A2 by Nef required 16 to 24 h and about 50 - to 100 - fold - greater concentrations of 4 - HT .

A: HLA - A2
****
Q:  This effect was completely reversed by preincubation with a tyrosine phosphatase inhibitor ( Na3VO4 ) , which suggests that TGF - beta1 activated a phosphatase .

A:
TGF - beta1
****