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:
In contrast , the binding of [ 3H ] DEX to C7 cytosol revealed a single class of binding sites ( Kd = 1 . 9 nM ; receptor concentration , 0 . 46 pmol / mg protein ) .

Ex Output:
binding sites

Ex Input:
p21ras and calcineurin synergize to regulate the nuclear factor of activated T cells .

Ex Output:
nuclear factor

Ex Input:
Western blot analysis revealed that B cells express a variant form of the Ku86 protein with an apparent molecular weight of 69 kDa , and not the 86 kDa - full - length protein .

Ex Output:
Ku86 protein