Fig. 3
From: The immunogenicity of PRV ΔgE/TK/UL49.5 three-gene-deleted vaccine in mice
The one-step growth curves of different PRV strains. Vero cells were inoculated with PRV QYY2012, PRV ΔgE/TK and PRV ΔgE/TK/UL49.5 strains. The cell culture supernatants were collected at different time points to calculate the TCID50 of each virus