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This Week in PNAS: Jul 18, 2007

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.

In another article, Joe Ecker at The Salk Institute collaborated with researchers at the University of Chicago to find genome-wide patterns of single-feature polymorphisms in Arabidopsis thaliana. They hybridized 23 wild strains of the plant to the ATH1 gene expression array and found 77,420 single-feature polymorphisms with distinct patterns of variation across the genome.

The Scan

Rise of BA.5

The New York Times reports that the Omicron subvariant BA.5 has become the dominant version of SARS-CoV-2 in the US.

UK Health Secretary Resigns

Sajid Javid, the UK health secretary, resigned along with Chancellor Rishi Sunak, saying they cannot work with Prime Minister Boris Johnson's government, CNN reports.

Clones From Freeze-Dried Cells

A team in Japan has cloned mice from freeze-dried skin cells, according to the Guardian.

Genome Research Papers on Craniosynostosis, Macaque Retrotransposition, More

In Genome Research this week: structural variants in craniosynostosis, LINE-1 activity in rhesus macaque brain, and more.