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:
 Glucocorticoid receptor number and intracellular water space .

Ex Output:
Glucocorticoid receptor


Ex Input:
 However , most effector CD8 + T cells recovered after exposure to Ag do not produce sufficient IL - 2 to sustain growth , and depend on CD4 + T helper cells for this obligate growth factor .

Ex Output:
IL - 2


Ex Input:
 The differences between N - OH - AAF mutation in the endogenous gene and transgene can be partially explained by the structures of the two genes .

Ex Output:

endogenous gene