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.

 In addition a comparative analysis of the hemopoietic stem cell and precursor compartment resulting from the two Ikaros mutations reveals a profound yet not absolute requirement for Ikaros in the production and differentiation of these populations .
Ikaros mutations

 DNA - binding activity of nuclear factor - kappaB was determined by electrophoretic mobility shift assay .
nuclear factor

 Effect of thymosin on glucocorticoid receptor activity and glucocorticoid sensitivity of human thymocytes .

glucocorticoid receptor