Retrovirus purification: method that conserves envelope glycoprotein and maximizes infectivity

Abstract
A Sepharose 4B chromatographic method for purification of retroviruses [Moloney sarcoma virus and Moloney leukemia virus] is described which was less time consuming, increased purified virus yields, conserved viral glycoprotein and increased recovery of biological infectivity in comparison with conventional sucrose gradient ultracentrifugation techniques.