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.
Input: The regulation of GM - CSF expression is seen in both normal human mitogen - activated T lymphocytes and T lymphocytes from a line ( S - LB1 ) transformed with human T cell lymphotropic virus 1 ( HTLV - 1 ) .
Output:
GM - CSF