TASK DEFINITION: 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.
PROBLEM:  As immunoglobulin transcription is mainly regulated by the B - cell transcription factors Oct2 and BOB . 1 / OBF . 1 , we analyzed 35 cases of LPHD , 32 cases of cHD , and 2 Hodgkin disease cell lines for the expression of these transcription factors and also in parallel for immunoglobulin expression .

SOLUTION: transcription factors

PROBLEM:  Reticulocyte lysate contains a chaperone system that assembles glucocorticoid receptor ( GR ) . hsp90 heterocomplexes .

SOLUTION: glucocorticoid receptor

PROBLEM:  We have also detected a DNA - protein interaction that may be involved in the cell - type specificity of immunoglobulin expression , and we have determined that a sequence upstream of the octamer participates in an interaction with a nuclear protein ( s ) .

SOLUTION:
nuclear protein