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.

 BCL - 6 is essential for germinal center formation and thus for affinity maturation of immunoglobulin ( Ig ) genes by somatic mutations .
BCL - 6

 [ Tumor histology and steroid receptors in breast carcinoma ]
steroid receptors

 In the primitive erythroid lineage , transcription of the embryonic epsilon - globin gene parallels GATA - 1 expression while the switch to beta - globin transcription in definitive erythroid cells is directly preceded by a pronounced increase in GATA - 3 accumulation .

GATA - 3

