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.

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

Output: IL - 2


Input: Consider Input:  NF - kappaB inhibition with N - acetylcysteine ameliorated the local inflammatory response .

Output: NF - kappaB


Input: Consider Input:  The staining was considered to be highly specific because it could be completely blocked by preabsorption with recombinant IFN - gamma .


Output: IFN - gamma