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: Thus , IL - 6 promotes CD4 + Th2 differentiation and inhibits Th1 differentiation by two independent molecular mechanisms .

Output: IL - 6

Input: Consider Input: The mechanism of reducing NO production resulting from inhaled NO may involve , in part , the activities of reactive oxygen species and / or nuclear factor - kappaB .

Output: nuclear factor

Input: Consider Input: Subsequently , DCs act as APCs involved in the uptake , processing , and presentation of apoptotic tumor Ags to cross - prime CD8 ( + ) CTL cells .
Output: apoptotic tumor Ags