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.

 However , there has been no direct demonstration that activator protein - 1 is involved in CD28 - dependent costimulation of IL - 2 gene transcription in freshly isolated naive and memory human T lymphocytes .
IL - 2

 We show that dispersion of PML bodies by Z requires a portion of the transcriptional activation domain of Z but not the DNA - binding function .
transcriptional activation domain

 Adherence , which is important for MO differentiation , induced CRABP II expression , but the addition of 10 ( - 7 ) M retinoic acid inhibited the upregulation of CRABP II expression during MO / MAC differentiation .

CRABP II

