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Jonathan Rothberg has raised some $100 million to develop a small, portable ultrasound device, Technology Review reports. The device is being developed by Butterfly Network, a company coming out of Rothberg's 4Combinator incubator.

The device, Rothberg tells Tech Review, will cost a few hundred dollars, and allow a technician to examine the results to determine, for instance, whether a fetus has Down syndrome or a cleft lip. Down the line, it adds, it may also be able to deliver heat to destroy cancer cells.

It's based on a new type of ultrasound chip that can create 3D images in real time, providing, the patent application says "what appears to be a window” into, for example, the body.

"Rothberg says his first goal will be to market an imaging system cheap enough to be used even in the poorest corners of the world," Tech Review adds. "He says the system will depend heavily on software, including techniques developed by artificial intelligence researchers, to comb through banks of images and extract key features that will automate diagnoses."

The Scan

Not as High as Hoped

The Associated Press says initial results from a trial of CureVac's SARS-CoV-2 vaccine suggests low effectiveness in preventing COVID-19.

Finding Freshwater DNA

A new research project plans to use eDNA sampling to analyze freshwater rivers across the world, the Guardian reports.

Rise in Payments

Kaiser Health News investigates the rise of payments made by medical device companies to surgeons that could be in violation of anti-kickback laws.

Nature Papers Present Ginkgo Biloba Genome Assembly, Collection of Polygenic Indexes, More

In Nature this week: a nearly complete Ginkgo biloba genome assembly, polygenic indexes for dozens of phenotypes, and more.