ELIZABETH COHEN, CNN SENIOR MEDICAL CORRESPONDENT: Another company, Regeneron is trying a similar with mice who are engineered to have portions of the human immune system. The scientists call the magic mice, they extract and clone the best antibodies.</s>DR. GEORGE YANCOPOULOS, REGENERON: We literally genetically humanized mice. We put in the genes for the human immune system into mice so that these mice have pretty much exactly a human immune system.</s>COHEN: Both companies plan to start human clinical trials early this summer. (on camera): If all goes well, when might this drug be on the market?</s>YANCOPOULOS: So, if all goes well, we expect that we'll have the drug on the market by early next year.</s>COHEN (voice-over): Of course, there's no telling if this will work. But hopefully these part human animals will play a role in saving lives during the pandemic.</s>COHEN: An interesting note, all of the cows that you saw in our story, they're all female. The company makes it that way because female cows produce more antibodies -- Kate.</s>KATE BOLDUAN: Fascinating, Elizabeth, thanks, so much. Still ahead for us, record retail sales losses happened last month. The food and hospitality industry one of the hardest hit. Is this what's behind my next guest's prediction that one in four restaurants may not reopen at all.
Researchers Are Using Mice to Develop Antibody Treatment