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

Output: HLA - A2


Input: Consider Input:  However , the differentiation induced by the ER - 35795 was not antagonized at all by the RAR antagonist , but was inhibited by an RXR homodimer antagonist ( LGD100754 , ( 2E , 4E , 6Z ) - 7 - ( 3 - n - propoxy - 5 , 6 , 7 , 8 - tetrahydro - 5 , 5 , 8 , 8 - tetramethylnaphthale - 2 - yl ) - 3 - methylocta - 2 , 4 , 6 - trienoic acid ) .


Output: RXR homodimer