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. 1974 Aug;10(2):381–388. doi: 10.1128/iai.10.2.381-388.1974

Detection of Dengue Cell-Surface Antigens by Peroxidase-Labeled Antibodies and Immune Cytolysis

P J Catanzaro 1, W E Brandt 1, W R Hogrefe 1, P K Russell 1
PMCID: PMC415009  PMID: 4136628

Abstract

The appearance of dengue-specific plasma membrane (DSPM) antigens in infected LLC-MK2 cell cultures was studied by 51Cr release in immune cytolysis and at an ultrastructural level using peroxidase-labeled antibodies. DSPM antigen was first detected at 36 h with electron microscopy in approximately 30% of the cells, and this percentage did not increase with time. However, both surface staining with peroxidase-labeled antibodies and 51Cr release indicated that the amount of DSPM antigen per cell increases with time. The appearance of 51Cr release in immune cytolysis experiments with dengue-infected cells occurred much later than the peak of infectious virus release. This was in sharp contrast to immune cytolysis with a group A arbovirus, Eastern equine encephalitis, in which the kinetics of release of infectious virus and 51Cr release were identical. This suggests different mechanisms of insertion of viral plasma membrane antigens in Eastern equine encephalitis and dengue-infected LLC-MK2 cells.

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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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