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. Biology of Reproduction, with an impact factor of 3.870 (5-year impact factor 3.979; ISI 2010 JCR Science Edition, July 2011), is consistently one of the most highly cited journals publishing original research in the field of reproductive biology