instruction:
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.
question:
 Preferential transcription of HTLV - I LTR in cell - free extracts of human T cells producing HTLV - I viral proteins .
answer:
viral proteins


question:
 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 ) .
answer:
GM - CSF


question:
 The transcriptional activity of the CD4 gene promoter correlated with CD4 expression in various cell types .
answer:

CD4 gene promoter