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" ... In theory, anyway, if memory B cells play a strong role in immunity to SARS-CoV-2, COVID-19 patients would maintain in their bloodstreams the immune memory of the virus, and would react defensively and effectively to re-infections. ... "
" ... The findings are important because iron --- which forms in the last stages of a star that’s about to go supernova --- is crucial to life as we know it. Astrobiologists may in turn push back the clock on when life could have begun based on these findings. That’s because terrestrial mass planets like Earth are laden with iron cores and we ourselves need this stellar byproduct to carry oxygen in our bloodstreams. ... "
" ... With decades of data on hand, the outcomes are clear: Syringe exchange programs prevent HIV/AIDS, Hepatitis B, Hepatitis C, and deadly bacterial infections of heart valves and bloodstreams. Operating on the principle that we must help people survive if they are to recover, syringe services programs offer safe havens to people struggling with addiction, where they can seek nonjudgmental health care until they’re ready to quit, and a connection to rehabilitation once they are. ... "