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.

Example Input:  A number of physiological and synthetic progestins were tested for their ability to compete with [ 3H ] dexamethasone for the binding to the glucocorticoid receptor of human mononuclear leukocytes and their ability to elicit glucocorticoid - like effects on the same cells .
Example Output: glucocorticoid receptor

Example Input:  Corresponding enzymatic activity was detectable only for 17 - hydroxysteroid dehydrogenase and 5alpha - reductase , respectively producing testosterone and 5alpha - dihydrotestosterone .
Example Output: 5alpha - reductase

Example Input:  These results suggest that the signal pathway mediated by Y497 is dispensable for both IL - 4 - driven Th2 differentiation and cell expansion .
Example Output:
IL - 4