The Downstream Column (DsC) is an online publication targeting members of the biologics industry. Our intent is to provide a community to share expertise and best practices as well as discuss topics of interest. The Downstream Column covers areas important to the research, discovery, development, and manufacture of biologic therapeutics. Key industry coverage areas include: purification, formulation, fill/finish, and QA/QC for cell and gene therapies, vaccines, biologics, and emerging therapeutic modalities.