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.

 We show here that Bright has multiple contextual requirements to function as a transcriptional activator .
transcriptional activator

 METHODS : Mice were injected intraarticularly with mBSA on day 0 and subcutaneously with recombinant human IL - 1beta on days 0 - 2 .
IL - 1beta

 They also showed the expression of mRNA for the myeloid - specific PU . 1 but did not that for the erythroid - specific GATA - 1 .

PU . 1

