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:
GH signals by interacting with GH receptor ( GHR ) .

Ex Output:
GH receptor

Ex Input:
These cells also showed an increase in cyclin A and cyclin A - and E - associated kinase activities characteristic of S phase induction .

Ex Output:
cyclin A

Ex Input:
The other end of this cluster contained the human type I cytokeratin K20 and K12 gene loci .

Ex Output:
K12 gene