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YS Biopharma Granted Patent in the U.S. for Immunotherapy Targeting Chronic Hepatitis B Virus Infection

YS

GAITHERSBURG, Md., Sept. 15, 2023 /PRNewswire/ -- YS Biopharma Co., Ltd. (NASDAQ:YS) ("YS Biopharma" or the "Company"), a global biopharmaceutical company dedicated to discovering, developing,