Sialic acid dependent infection by IBV Beaudette and TGEV Miller at short and long adsorption times. The infectivity of IBV Beaudette and TGEV Miller was determined at adsorption times of 5 or 60 min, respectively. Prior to infection, Vero cells (for IBV) and ST cells (for TGEV) were incubated for 60 min with either PBS (grey columns) or PBS containing 50 mU of neuraminidase (white columns). The experiments were performed 3 times. Standard deviations are indicated. Significant differences are marked with an asterisk (*, p-value < 0.05).
Schwegmann-Weßels et al. Virology Journal 2011 8:435 doi:10.1186/1743-422X-8-435