PCR—the workhorse of modern molecular biology—is charging forward using both conventional and digital methods to explore single cells and even single molecules. Nathan Blow reports. In late ...

But one technology more than any other had the ability to render the invisible visible — polymerase chain reaction (PCR) testing. The COVID-19 pandemic demonstrated the power of PCR to quickly ...

The put/call ratio is an effective derivative indicator. This ratio is calculated by dividing the total trades of put options by the total trades of call options. Contrary to other market metrics, the ...