Syncytium formation is a property of -

Ans. is 'c' i.e., Measles virus Methods of detection of viral growth in cell cultures1. Cytopathic effecto Many viruses causes morphological changes in cultured cells knowm as cytopathic effect,o Examples are:EnterovirusMeasles virusHerpes virusAdenovirusSV40Crenation of cells and degeneration of the entire cell sheetSyncytium formationFocal degenrationLarge granular clump resembling bunches of grapesCytoplasmic vacuolation2. Metabolic Inhibition3. Hemadsorptiono Mainly for influenza and parainfluenza viruses.4. Interferenceo Growth of the first vims inhibit the growth of second vims.5. Transformationo For oncogenic viruses6. Immunofluoresenceo For detection of viral antigeno Give positive results earlier than other methods.