Bovine viral diarrhea virus (BVDV) was concentrated and purified by a combination of ultrafiltration, hydroextraction using polyethylene glycol and affinity chromatography. A lectin from Crotalaria juncea that has an affinity for galactose was used in the affinity chromatography. Virions of BVDV
Attempts were made to purify bovine viral diarrhea virus by chromatography on Crotalaria juncea lectin coupled to Sepharose 2B. A recovery of abut 65% of viral infectivity after desorption was obtained. Electron microscopy revealed mostly de-enveloped particles, rather uniform in appearance but
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