This Week in PLOS

In PLOS One, researchers from Japan describe the 18S ribosomal RNA gene sequencing method they used to catalog the types of parasitic helminth worms present in the intestines of nine wild rats — seven from the Rattus norvegicus species and two R. rattus — sampled at either a downtown restaurant or a suburban zoo in the Japanese city of Miyazaki. All but one of the rats carried nematode worms in their intestine, the team notes.

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A genomic analysis of modern and ancient maize reveals a complicated domestication history, according to Reuters.

In PLOS this week: MYRF variant linked to congenital diaphragmatic hernia, analysis of the "dragon's blood" red resin produced by traditional medicine plants, and more.

CNBC reports that half of academic researchers leave after about five years.

Researchers have used genetic analysis to confirm a new type of salamander, the New York Times reports.