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In the early, online edition of Proceedings of the National Academy of Sciences, investigators from the University of Massachusetts and Tufts University demonstrate the feasibility of establishing a mouse model of genetically-induced emphysema using CRISPR/Cas9-based editing to lop out half a dozen paralogs of Serpina1 — a gene implicated in alpha-1 antitrypsin deficiency (AAT)-related forms of emphysema in humans.

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According to NPR, an antibody-based test could identify people who were exposed to SARS-CoV-2 and either didn't develop symptoms or were misdiagnosed.

A sequencing analysis of New York City rats indicates they have adapted to the urban environment there, according to a recent preprint.

Ars Technica reports that a multicellular eukaryotic parasite has lost its mitochondria.

In Science this week: perspective piece says AI can accelerate drug discovery by using genomic and chemical data, and more.