text: Genes that regulate interleukin-4 expression in T cells. 
  Interleukin-4 is an immunomodulatory cytokine which plays a central role in the regulation of allergic and atopic immune responses. Significant progress has been made in gaining a detailed understanding of the transcriptional regulation of the interleukin-4 gene. The recent identification and characterization of several key transcription factors has helped to elucidate the molecular mechanisms of T helper cell cytokine gene expression. 