Fig. 2.7 Kinetics of infectious virus production. Caco-2 cells were infected with HAstV-8, and at
different time points (from 0 to 24 hpi) the extracellular and cell-associated fractions were analyzed
for infectious viral particles. Virus in the extracellular ( empty circles ) and cell-associated ( fi lled
circles ) fractions was determined after trypsin treatment [ 3 ]