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:
 This suggests the association of E2 - receptor expression with control of growth rather than cell maturation .

Ex Output:
E2 - receptor


Ex Input:
 The lack of NF - kappa B transactivation and PKC epsilon expression in CD4 ( + ) CD8 ( + ) thymocytes correlates with negative selection .

Ex Output:
PKC epsilon


Ex Input:
 Number of glucocorticoid receptors in lymphocytes and their sensitivity to hormone action .

Ex Output:

glucocorticoid receptors