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Imperial College London

The researchers believe that their prototype could be the basis of a portable, point-of-care testing platform that would enable rapid testing anywhere.

In Cell this week: long-term SARS-CoV-2 shedding, examination of the effects of a coronavirus spike protein mutation, and more.

The Guardian writes that researchers are examining whether small genetic changes account for the different COVID-19 disease courses people experience.

Decline in Antibodies

A UK study has found that antibodies against SARS-CoV-2 may decline over time, Reuters reports.

The UK is investing £33.6 million into a controversial human SARS-CoV-2 challenge study, according to Reuters.

The new method incorporates analysis of the amplification and melt curves and was used to create a single-channel nonaplex test using intercalating dye.

Using transcription data from cells and nuclei, the researchers uncovered heterogeneity within cardiac cells and mapped them to particular regions of the heart.

CovidNudge Numbers

A new analysis finds the rapid COVID-19 test from DnaNudge to be highly accurate, Reuters reports.

The test is based on 13 genes that form a gene signature in the blood of children with Kawasaki disease, and it enables KD to be distinguished from other diseases.

Strands of Four

New Scientist reports that researchers have found a quadruple-stranded form of DNA within healthy human cells.

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According to NBC News, new SARS-CoV-2 variants are making it harder for researchers to model the course of the pandemic.

The Wall Street Journal reports on gaps in COVID-19 testing affecting less affluent urban areas and rural locations.

The New York Times reports that experts say President Joe Biden's goal of vaccinating 1 million people a day in the US in the next 100 days is too low a bar.

In Science this week: single-cell lineage tracing technique applied to study lung cancer metastasis, and more.