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:  Inhaled NO also blocked the activities of reactive oxygen species and nuclear factor - kappaB binding to DNA in lavage cells and in alveolar macrophages .

Output: nuclear factor


Input: Consider Input:  This sequence - specific binding is probably mediated by a highly conserved sequence motif , ATTTGCAT , present in all three transcriptional elements .

Output: transcriptional elements


Input: Consider Input:  Regulation of activator protein - 1 and NF - kappa B in CD8 + T cells exposed to peripheral self - antigens .


Output: self - antigens