+E2a refers to a group of basic [Helix-loop-helix](/wiki/Helix-loop-helix) [Transcription Factors](/wiki/Transcription_Factor) that regulate gene activity. It is crucial for the proper development and function of [B Cells](/wiki/B_Cell), playing a central role within the immune system.
+## See also
+- [Gene Expression](/wiki/Gene_Expression)
+- [Immune System](/wiki/Immune_System)
+- [Lymphocyte](/wiki/Lymphocyte)
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