The copying of DNA's master instructions into messenger molecules of RNA, a process known as DNA transcription, has always been thought to be a unidirectional process whereby a copying machine starts and moves in one direction. But in work that represents a fundamental shift in scientists' understanding of the phenomenon, MIT researchers have found evidence that two DNA copying machines frequently start from the same site and move in different directions.
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woot. Can't wait for it to get online on NCBI.
http://www.ncbi.nlm.nih.gov/pubmed/19056940?ordinalpos=1&itool=EntrezSy…
or, as an alternative, I will get on the nerves of a liberian at my university. :)