RuiYi and Genor Biopharma agreed to co-develop the former's experimental monoclonal antibody drug RYI-008 against cancer and autoimmune diseases, particularly rheumatoid arthritis, in China. The deal follows RuiYi's announcement that it would use CMC Biologics' CHEF1 high-productivity expression plasmid to speed work on a cell line for RYI-008.

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