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.

 The resistance to cytolethal effects can not be ascribed to a failure of cells to take up and bind steroid or to significant differences in the molecular species of cytoplasmic receptors present .
cytoplasmic receptors

 Maturation of DP cortical thymocytes to single - positive ( CD4 ( + ) / CD8 ( - ) or CD8 ( + ) / CD4 ( - ) ) medullar thymocytes correlated with decreased detectability of EZH2 and continued relative absence of BMI - 1 .
BMI - 1

 Consistent with this biologic function , the Epstein - Barr virus ( EBV ) Rta protein powerfully stimulates the promoter of its own gene , Rp , in EBV - positive B cells in transient - transfection reporter - based assays .

Rta protein