by Gail Sofer, BioReliance, Dorothy C. Lister, and Jeri Ann Boose
by Gail Sofer, BioReliance Dorothy C. Lister, and Jeri Ann Boose Smallest of the microorganisms, viruses depend on other cells ? like those used by biopharmaceutical manufacturers ? for reproduction. And viruses and drug products are idiosyncratic: Both the inactivation process and the product strongly influence the successful outcome. In this conclusion to the virus inactivation series, model ivruses are used to represent single- and double-stranded DNA and RNA viruses, to enable you to reach conclusions about effective inactivation methods for a range of viruses.
by Barbara Tipton, Jeri Ann Boose, Joanne Beck, Thomas O'Brien, and William Larsen, CUNO Incorporated Two types of depth filters are studied for their ability to rid protein solutions of retroviruses and parvoviruses. Such filters are relatively economical and easy to use, so as secondary virus-removing devices, they are beneficial for downstream processing of mammalian cell cultures. Results indicate that depth filters are more effective on retroviruses than parvoviruses.