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:  The effective use of superoxide dismutase from human erythrocytes in the late stages of experimental influenza infection

Output: superoxide dismutase


Input: Consider Input:  To further study the role of tTG in liver disease , we initiated investigations into the effect of a proinflammatory mediator , tumor necrosis factor ( TNF ) - alpha , on tTG activity in cultured liver cells .

Output: tumor necrosis factor


Input: Consider Input:  Penicillamine - induced myasthenia gravis associated with antibodies to acetylcholine receptor .


Output: acetylcholine receptor