Detailed Instructions: 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.
Q: To determine the presence and potential role of BCL - 6 mutations in cHD , the 5 ' - noncoding BCL - 6 proportion of single Hodgkin and Reed - Sternberg ( HRS ) cells from 6 cases of cHD and 6 cases of HD - derived cell lines was analyzed .
A:
BCL - 6