<prompt> Virus quantification is done by -Egg inoculationHemadsorptionPlaque assayElectron microscopy  <response>: Quantitative assays measure the actual number of infectious paicles in the inoculum. Two methods available-plaque assay and pock assay. REF:ANATHANARAYAN AND PANIKERS TEXTBOOK OF MICROBIOLOGY 8TH EDITION PAGE NO:437 