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. 1969 Sep;18(3):433–437. doi: 10.1128/am.18.3.433-437.1969

Preparation of La Crosse Virus Hemagglutinating Antigen in BHK-21 Suspension Cell Cultures

W Adrian Chappell a, Pekka E Halonen a,1, Roberta F Toole a, Charles H Calisher a, Leo Chester a
PMCID: PMC377999  PMID: 5392898

Abstract

Hemagglutinating and complement-fixing antigens of La Crosse virus (California arbovirus group) were produced in serum-free suspension cultures of BHK-21/13S cells. The appearance and production of these antigens were correlated with the titer of infectious virus. No significant differences in antigen titers were produced by varying virus dose 10-fold. Hemagglutinin appeared 6 to 8 hr after inoculation and reached peak titer in 14 to 22 hr. Both β-propiolactone and Tween 80-ether treatment inactivated infectious virus in the antigens. Unlyophilized antigen was stable at -60, 5 and 24 C for at least 117 days but not for 1 year. Lyophilized antigen was stable for at least a year, however, at -20 and 5 C. Cell culture-produced antigen was more sensitive than brain-produced antigen in detecting hemagglutination inhibition antibody in human sera.

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Selected References

These references are in PubMed. This may not be the complete list of references from this article.

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