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: The Tip protein of Herpesvirus saimiri strain 484C binds to and activates the Lck tyrosine protein kinase .
Example Output: Tip protein

Example Input: We show in this study , using TCF - 1 beta ( 2 ) - microglobulin double - deficient mice , that these repertoire alterations are not due to Ly - 49 / MHC class I interactions .
Example Output: TCF - 1

Example Input: Keywords included reperfusion injury , transplantation , liver resection , nitric oxide , endothelin , cytokines , Kupffer cells , ischemic / ischaemic preconditioning , and nuclear factor - kappa B .
Example Output:
nuclear factor