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:  In order to determine the function of PPAR - gamma , T cells were stimulated with phorbol 12 - myristate 13 - acetate and ionomycin or antigen and antigen - presenting cells .
Example Output: PPAR - gamma

Example Input:  The trans - activator protein Tax of human T - cell leukemia virus type I ( HTLV - I ) plays an important role in the development of adult T - cell leukemia through , at least in part , its ability to stimulate cell growth .
Example Output: trans - activator

Example Input:  Due to Jurkat T - cells being IL - 2 - independent , it was postulated that IL - 2 might provide a necessary co - stimulus for phosphorylation of CREB in primary lymphocytes .
Example Output:
IL - 2