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.

Example Input:  Activated PBMCs also expressed lower levels of RXRalpha protein , and a DNA binding assay showed that the activation - induced loss of RXRalpha mRNA and protein expression correlated with the loss of DNA binding activity of this protein .
Example Output: RXRalpha mRNA

Example Input:  BACKGROUND / AIMS : A single intranasal delivery of retinal autoantigen suppresses effectively experimental autoimmune uveoretinitis ( EAU ) .
Example Output: retinal autoantigen

Example Input:  The mutations are linked to transcription initiation , but non - Ig promoters are permissible for the mutation process ; thus , other genes expressed in mutating B cells may also be subject to somatic hypermutation .
Example Output:
Ig promoters