In the early years of the HIV epidemic, researchers and health workers assumed that the partners of HIV-positive individuals would also be infected. But in 1988, Susan Allen, then a researcher at UCSF, made a startling discovery. While tracking HIV in pregnant Rwandan women, Allen found that 14% of her 1,500 research subjects did not share the same HIV status as their partners (1). To Allen, th...

Scientists' interest in religion seems to come in waves. One arrived after the publication of Darwin's Origin of Species in 1859. Another followed in the 1930s and 1940s, inspired by surprising revelations from quantum mechanics, which suggested the insufficiency of conventional physical theories of the universe. And now scientists are once again writing about religion, apparently provoked this...

The Allen Developing Mouse Brain Atlas provides a cellular-resolution map of gene expression in the developing mouse brain from the embryo to the young adult. To provide a novel neuroanatomical framework based on genoarchitectonic data, the Allen Developing Mouse Brain Reference Atlas was created with the expertise of Professor Luis Puelles, MD, PhD (University of Murcia, Spain). Sagittal full-...