BS ISO 21709:2020 pdf free.Biotechnology一Biobanking一Process and quality requirements for establishment, maintenance and characterization of mammalian cell lines. BS ISO 21709 This document specifies process and quality requirements for the biobanking of mammalian (including human) cell lines. It describes requirements for the fundamental procedures of the biobank handling cell lines, such as establishment, reception, identification, propagation, preservation, storage, quality control, and...