Literature question: "Category theory" and "epigenetics"

Is anyone aware of work in this area? Epigenetics is fairly new, so it is possible that such might have been done in biochemistry or genetics. Thanks in advance. Steve === Dr. D. E. Stevenson, School of Computer Science 315 McAdams Hall, Clemson University 864-656-5880 [For admin and other information see: http://www.mta.ca/~cat-dist/ ]