Researchers are pursuing a dizzying array of drugs to stymie #COVID19, many repurposed from other diseases. But results remain preliminary, and it’s not yet clear which approach, or combination of approaches, will work best. A news feature in PNAS: http://ow.ly/I66p50zfj3j pic.twitter.com/ayg0YTyWse
![](https://bac-lac.wayback.archive-it.org/web/20200424185959im_/https://pbs.twimg.com/media/EWOSO7vWAAMxzuh.jpg)
10:01 AM - 22 Apr 2020
0 replies
3 retweets
4 likes
Loading seems to be taking a while.
Twitter may be over capacity or experiencing a momentary hiccup. Try again or visit Twitter Status for more information.