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.

Input: Consider Input:  This distinct biochemical difference between STAT5A and STAT5B was confirmed with purified activated STAT5 recombinant proteins .

Output: STAT5 recombinant proteins


Input: Consider Input:  NSD1 contains a SET domain and multiple PHD fingers .

Output: SET domain


Input: Consider Input:  In vitro DNA binding assays indicate that the elements identified can specifically interact with c - Ets - 1 protein .


Output: Ets - 1