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:  Taken together , the data indicate that 2 , 2 ' , 4 , 6 , 6 ' - PeCB induces apoptosis in human monocytic cells through a mechanism that is independent of the arylhydrocarbon receptor .

Output: arylhydrocarbon receptor


Input: Consider Input:  In addition , the proliferative advantage of p12 ( I ) - transduced PBMCs was evident mainly at low concentrations of IL - 2 .

Output: IL - 2


Input: Consider Input:  In the present study , we have demonstrated that , unlike resting cells , activation of cycling human mature PBT lymphocytes , and T lymphocyte leukemia cell lines is accompanied by the accumulation of RXRalpha mRNA and protein .


Output: RXRalpha mRNA