This Week in PNAS

Two open access papers published this week in PNAS score for systems biology. Neuroscientists at Yale, Harvard, and the Burnham Institute report that when they implanted undifferentiated human neural stem cells into primates made to show symptoms of Parkinson's disease, some of these cells improved behavior and increased dopamine levels.

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Researchers have sequenced the northern white rhinoceros to gauge whether it could be brought back from the edge of extinction, the New York Times reports.

Bavaria expands its forensic genetic analyses to include DNA phenotyping, raising discrimination concerns.

Tufts University researchers found a role for miRNA in transmitting stress between generations, the Economist reports.

In Science this week: gut microbiome influences liver cancer growth, spread; and more.