Croda and Botanical Solution Inc. (BSI) Announce Partnership to Accelerate Production of Sustainable Vaccine Adjuvant QS-21 May 22, 2023 San Francisco Biotechnology Network News News, Syndication Comments Off on Croda and Botanical Solution Inc. (BSI) Announce Partnership to Accelerate Production of Sustainable Vaccine Adjuvant QS-21 DAVIS, Calif.--(BUSINESS WIRE)--Croda and Botanical Solution Inc. (BSI) announce partnership to accelerate production of sustainable vaccine adjuvant QS-21. Click to view original post