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: Identification of a novel cyclosporin - sensitive element in the human tumor necrosis factor alpha gene promoter .

Output: tumor necrosis factor

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: As a result of this interaction , p12 ( I ) increases signal transducers and activators of transcription 5 ( STAT5 ) DNA binding and transcriptional activity and this effect depends on the presence of both IL - 2R beta and gamma ( c ) chains and Jak3 .
Output: IL - 2R