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.

 A V1 mutant generated in vivo with 11 of the 14 N - terminal amino acids altered , was viable and produced symptoms typical of a wild - type infection .
V1 mutant

 Growth factors promote cell survival through phosphorylation of Bad , resulting in its dissociation from Bcl - 2 and Bcl - x ( L ) and its association with 14 - 3 - 3tau .
Bcl - 2

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

superoxide dismutase