Abstract Friendships between members of different ethnoracial groups can help to reduce prejudice and ease tensions across groups. A large body literature has explored possible determinants for the formation these friendships. One unexplored factor is role an individual’s skin color in influencing their opportunities befriend other This study seeks answer two questions: For minorities, how asso...

The transcription factor HIF-1 mediates adaptive responses to hypoxia, and its activity is negatively regulated by O2-dependent binding of the von Hippel-Lindau (VHL) protein. In this issue, Boutin et al. (2008) use conditional knockout mice to demonstrate that sensing of O2 by keratinocytes in the epidermis leads to alterations in cutaneous blood flow that affect the production of the hormone ...

The USA is witnessing a growing debate about the apparent disparities between the health status of white Americans and racial minorities, most notably African Americans and Hispanics. In 1993, the US government admitted that there are significant differences and responded by establishing the Minority Health Initiative to investigate and redress these discrepancies. The National Cancer Institute...

End-on view of the atomic model of the bacterial actinlike ParM protein double-helical fi lament, generated from an electron microscopic reconstruction. A bipolar spindle of antiparallel ParM fi laments pushes plasmids to the cell poles, constituting the simplest known apparatus for the segregation of genetic information. The loops on the outside of the 8to 9-nanometer-thick fi laments are invo...