This Week in Cell

Investigators at the Hospital for Sick Children, University of Toronto, University of Utah, and elsewhere explore mechanisms for medulloblastoma metastases to leptomeningeal tissue surrounding the brain and spinal cord. The team did whole-genome sequencing on primary medulloblastoma samples, peripheral blood samples, and matched leptomeningeal metastases from three individuals with the disease, a childhood cancer that begins in the brain's developing cerebellum.

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 Senator Lamar Alexander (R-Tenn.), who chairs the Senate health committee, will be retiring at the end of his term, Stat News reports.

UCSF researchers find that having two X chromosomes may contribute to women's longer lifespans, according to Discover's D-brief blog.

The Wall Street Journal reports on the US Centers for Disease Control and Prevention's use of genetic approaches to study foodborne illnesses.

In PNAS this week: immune cell profiling of wild baboons by social status, metabolomics profiling of esophageal tumors, and more.