In PNAS this week: transcript patterns in drug-resistant cancer cells, function of high-altitude adaption gene, and more.

Monitoring gene expression changes could help sniff out athletes using performance-enhancing drugs, New Scientist says.

The University of Southern California lodges a cross-complaint in its legal dispute with the University of California, San Diego, over a large Alzheimer's disease project.

Bioethicists weigh the idea of charging patients to take part in clinical research, coming down against the approach.