The author is in the Department of Molecular Biology at the Helen L. Dorris Institute for Neurological and Psychiatric Disorders, The Scripps Research Institute, ICND118, 10550 North Torrey Pines Road, La Jolla, California 92037, USA. jchun@scripps.edu
Individual olfactory sensory neurons express only one of more than a thousand different odorant receptors, suggesting that DNA rearrangement may be involved. Based on a clever new technical approach, two groups now conclude that this is not the case.
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