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:  Troglitazone , a PPARgamma ligand , dramatically attenuated the PMA - induced osteopontin expression .
Example Output: PPARgamma ligand

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:  The number of the binding sites per cell resulted significantly lower ( 189 + / - 114 , mean + / - SD ) , as compared with the normal controls ( 298 + / - 105 ) .
Example Output:
binding sites