Last week, I was about to go on a date, and because I'm severely immunocompromised, we agreed he would take a COVID test ...

Scientists have taken advantage of the power of DNA polymerase molecules to copy DNA molecules in test tubes via polymerase chain reaction, also known as PCR.

But despite the exciting potential of PCR for many fields, the current system underpinning commercial tests can be unfeasible, Chun contends. PCR systems are expensive, so most manufacturers rent ...