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:  Tumor necrosis factor levels were measured by enzyme - linked immunoabsorbent assay in plasma samples obtained from the hyperthermic isolated limb perfusion circuit and systemic circulation .

Output: Tumor necrosis factor


Input: Consider Input:  Interestingly , unlike PAK65 , HPK1 does not contain the small GTPase Rac1 / Cdc42 - binding domain and does not bind to either Rac1 or Cdc42 , suggesting that HPK1 . activation is Rac1 / Cdc42 - independent .

Output: small GTPase


Input: Consider Input:  Using reporter gene constructs driven by the CD4 promoter , we report that HHV - 6 can efficiently transactivate such genetic elements .


Output: CD4 promoter