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:  Significant mutations were not observed in c - MYC , S14 , or alpha - fetoprotein ( AFP ) genes , but BCL - 6 was highly mutated in a large proportion of memory B cells of normal individuals .
Example Output: BCL - 6

Example Input:  The differential timing of CD4 and HLA - A2 downmodulation may have implications for HIV pathogenesis and immune evasion .
Example Output: HLA - A2

Example Input:  Whether these translocations relate to a role for endogenous RARalpha in normal granulopoiesis remains uncertain because most studies addressing this question have used non - physiological overexpression systems .
Example Output:
endogenous RARalpha