PT - JOURNAL ARTICLE AU - Chen, Qi AU - Chen, Dayue TI - Viral Clearance of Traditional Unit Operations: Virus-Retentive Filtration AID - 10.5731/pdajpst.2015.01038 DP - 2015 Jan 01 TA - PDA Journal of Pharmaceutical Science and Technology PG - 142--153 VI - 69 IP - 1 4099 - http://journal.pda.org/content/69/1/142.short 4100 - http://journal.pda.org/content/69/1/142.full SO - PDA J Pharm Sci Technol2015 Jan 01; 69