Sex determination in vertebrates is a highly plastic process that centres on the decision within the gonad to develop as a testis or ovary. Regulation of this process has been co-opted by a diverse ...

The price of a product is determined by the law of supply and demand. Consumers have a desire to acquire a product, and producers manufacture a supply to meet this demand. The equilibrium market price ...

This Journal feature begins with a case vignette highlighting a common clinical problem. Evidence supporting various strategies is then presented, followed by a review of formal guidelines, when they ...