Key result
Overlay media and polycations influence rhinovirus type 34 plaque size independent of pH.
Population
Prototype strain of rhinovirus type 34
Design
Preclinical
Authors
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Overlay conditions shape rhinovirus plaque detection in vitro; leaves open assay standardization for respiratory virus research without clinical implications.
The study demonstrates that overlay media composition, specifically the presence of polycations, influences the plaque size of rhinovirus type 34 mutants.
Conant et al. (1970) studied Rhinovirus type 34 (in vitro). Overlay media (agarose, starch gel, polycations) vs. Ionagar overlay medium was evaluated on Plaque size and type (minute vs large). Rhinovirus type 34 plaque size (minute vs large) was influenced by the type of overlay medium and the presence of polycations, but not by pH.
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