Biology of Reproduction is the official journal of the Society for the Study of Reproduction (SSR) and publishes original research on a broad range of topics in the field of reproductive biology, as well as minireviews on topics of current importance or controversy. Co-Editors-in-Chief: John J. Eppig, Ph.D., Mary Ann Handel, Ph.D. Associate Editors: Fuller W. Bazer, Ph.D., John S. Davis, Ph.D., E. Mitch Eddy, Ph.D., Keith Latham, Ph.D., Sue Moenter, Ph.D., Sally Perreault Darney, Ph.D., JoAnne S. Richards, Ph.D., Bernard Robaire, Ph.D., Richard M. Schultz, Ph.D., Thomas E. Spencer, Ph.D., and Douglas M. Stocco, Ph.D. Biology of Reproduction, with an impact factor of 3.550 (ISI 2004 figures, July 2005), is consistently one of the most highly cited journals in the field of reproductive biology.