This Week in PNAS

In the early, online edition of the Proceedings of the Academy of Sciences, researchers from Stanford University demonstrate the feasibility of using circulating tumor cell analysis to track advanced lung cancer in individuals with non-small cell lung cancer.

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In a statement, National Institutes of Health Director Francis Collins says sexual harassment is "morally indefensible" and "unacceptable."

Octopuses might owe their intelligence to their liberal alterations to their genes, Cosmos reports.

Stat News and ProPublica report that African Americans are underrepresented in cancer clinical trials.

In Cell this week: genomic analysis of abdominal aortic aneurysm, effect of probiotics on the microbiome, and more.