213 articles from FRIDAY 26.2.2021

Coronavirus live news: France may impose regional lockdowns; South Korea starts vaccinations

French PM says worrying Covid spread in 20 areas; global death toll passes 2.5m; Brazil death toll passes 250,000. Follow latest updatesBiden hails 50m vaccine doses since he took office Moderna forecasts $18bn in sales of Covid vaccine this yearQueen urges Britons to ‘think about others’ and get vaccinatedRevealed: four in five Oxford Covid jabs delivered to EU not yet usedSee all our...

Signal transduction without signal: Receptor clusters can direct cell movement

Whether we smell, taste or see, or when adrenaline rushes through our veins, all of these signals are received by our cells via a specific group of receptor proteins called G protein-coupled receptors, which transmit signals to the inside of the cell. Biochemists have now discovered that such receptors can also produce signals even in the absence of an external stimulus: For certain receptors...