Fig. 3From: Comparative features of infections of two Massachusetts (Mass) infectious bronchitis virus (IBV) variants isolated from Western Canadian layer flocksBodyweight changes following infection with Western Canadian Mass-type IBV isolates. The average body weight of each group (IBV 15AB-01, IBV 15SK-02 and uninfected control) of chickens at different time points are depicted in the graph. The error bars represent the ±standard error of mean (SEM)Back to article page