The Regeneron Pharmaceuticals company logo is seen on a building at the company's Westchester campus in Tarrytown, New York, U.S. September 17, 2020. REUTERS/Brendan McDermid/File PhotoTherapy cut deaths by one-fifth in the seronegativeCan be used in combination with other treatmentsFinding bodes well for other antibody treatmentsLONDON, June 16 (Reuters) - A COVID-19 antibody cocktail developed…
