When preparing Lonza’s pooled human cell products, at least three donors are pooled, but there is not an upper limit. Historically, Lonza has as many as six donors to create a single lot, but not higher. The vast majority of lots for Lonza’s pooled human cell products are pooled from three donors. These cells are pooled just prior vialing/cryopreservation. Each strain is handled individually until final trypsinization and then the cells are pooled and vialed.