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

Ex Output:
STAT5 recombinant proteins


Ex Input:
 Promoter elements and transcriptional control of the mouse acetylcholinesterase gene .

Ex Output:
mouse acetylcholinesterase gene


Ex Input:
 The strategy uses RNA ligase to add DNA oligonucleotide priming sites to the RNA for subsequent reverse transcription and PCR ( RNA ligase , reverse transcription - PCR , or RL / RT / PCR ) .

Ex Output:

RNA ligase