Fig. 3.

Virus infection kinetics on monolayer and suspension BHK cells. Virus infection kinetics were performed using the virus variants A₂₄-2P to infect the suspension BHK-2P cell line, maintained in BHK200 (red line) or GMEM + 5% FCS (blue line) and A₂₄–179 to infect the monolayer BHK179 cell line (green line) at an MOI = 0.1 (panel a). The virus variant O₁-2P was used to infect the suspension BHK-2P cell line, maintained in BHK200 (red line), and the virus variant O₁–179 was used to infect the monolayer BHK179 cell line (green line) under the same conditions (panel b) as described for serotype A. All preparations were sampled for the first time after 4 h and every 2 h thereafter. CPE and cell viability are given in percent (%). Titers are shown in log₁₀ TCID₅₀ relative to time 0