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:  However , in spleen cells in vitro costimulation via the TCR is necessary for optimal IL - 2 gene induction .
Example Output: IL - 2

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:  Similarly , A / R - induced E - selectin expression and neutrophil - endothelial cell adhesion were blocked by inhibition of PKC or PTK , while only PTK inhibited the redox - induced adhesion response .
Example Output:
E - selectin