Hi Rick,
Thought you would be intereseted in this story.
http://www.newscientist.com/article/dn22273-worker-bees-reboot-brain-genes-to-suit-the-task.html
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Best,
-Nicole

Regulation of DNMT1 stability through SET7-mediated lysine methylation in mammalian cells
Direct interaction between DNMT1 and G9a coordinates DNA and histone methylation during replication