Hemagglutination and Hemagglutination-inhibition Studies with a Strain of Nebraska Calf Diarrhea Virus (Bovine Rotavirus)

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Abstract
A hemagglutinin was prepared from Nebraska calf diarrhea virus (NCDV) propagated in [African green monkey kidney] BS-C-1 cell line. After CsCl centrifugation, the hemagglutinin of the bovine rotavirus was associated with intact virions (density 1.355 g/ml) but not with virions lacking an outer capsid layer (density 1.375 g/ml). In hemagglutination-inhibition (HAI) tests, the hemagglutinin reacted specifically with NCDV serum, and HAI seroconversions were detected in some sera tested. Cross-reactions were observed in complement fixation tests between the human and bovine rotaviruses but were not demonstrated by HAI, suggesting that the hemagglutinin detects a specific rather than a group antibody response.

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