Article Information
PubMed
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History
- Received June 16, 2011
- Revision received September 1, 2011
- Accepted September 12, 2011
- First published November 2, 2011.
- Version of record published November 2, 2011.
Copyright & Usage
Copyright © 2011 the authors 0270-6474/11/3115802-05$15.00/0
Author Information
Author contributions
Author contributions: M.R.C. and J.H.R.M. designed research; M.R.C. performed research; M.R.C. analyzed data; M.R.C. and J.H.R.M. wrote the paper.
Disclosures
- Received June 16, 2011.
- Revision received September 1, 2011.
- Accepted September 12, 2011.
This work was supported by HHMI and NIH Grants K99 EY020844-01 (M.R.C) and R01EY005911 (J.H.R.M.). We thank Mark Histed, Amy Ni, and Douglas Ruff for helpful discussions and comments on an earlier version of the manuscript.
- Correspondence should be addressed to Marlene R. Cohen, A210 Langley Hall, University of Pittsburgh, Pittsburgh, PA 15213. cohenm{at}pitt.edu