Fig. 2.
In vitro growth profiles of parental genotype and NY99/MX03 point-mutant viruses in an avian myeloid cell line (HD11 chicken monocytes). The mean viral titre±sd was determined from triplicate cultures inoculated at an m.o.i of 0.01, with a detection limit of 50 p.f.u. ml−1. The parental recombinant WN/IC-P991 (a–c) and WN-MX03/IC (b, c) were included for reference. All samples were taken from a single concurrent experiment and data were partitioned into separate graphs for presentation purposes.