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:  IFN - gamma - positive cells were present in the upper dermis of the lesions .

Output: IFN - gamma


Input: Consider Input:  Together these data indicate that IFN - alpha can facilitate activation of Th1 - reactive cells in the gut and drive immunopathology .

Output: IFN - alpha


Input: Consider Input:  The pattern of IFN - gamma staining appeared to be intracellular in mononuclear lymphoid cells .


Output: IFN - gamma