Two Phases of Rod Photoreceptor Differentiation during Rat Retinal Development

This work was supported by National Institutes of Health Grants EY09676 and EY08064. We thank Dr. R. S. Molday for an ample supply of the Rho4D2 antibody, and M. Zeidler for help with confocal microscopy. E.M.M. also thanks in particular Diala Ezzeddine for helpful discussions during the course of the work and for a thorough and critical reading of this manuscript. As well, we thank Z.-Z. Bao, A. Chen, and D. Schulte for feedback on this manuscript, and members of the Cepko/Tabin Lab for help while these experiments were conducted.

Correspondence should be addressed to Constance L. Cepko, Department of Genetics and Howard Hughes Medical Institute, Harvard Medical School, 200 Longwood Avenue, Boston, MA 02115.