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. 2020 Aug 18;12(8):902. doi: 10.3390/v12080902

Figure 2.

Figure 2

Plaque size and morphology in mammalian porcine kidney (PS) cells during serial passaging of tick-borne encephalitis virus variants in PS and IRE/CTVM19 tick cells. (A) Plaque size of the parental strain 0P. (B) Difference in plaque size between 30 PS (left) and 30 IRE (right). (C) Difference in plaque size between 40 PS (left) and 40 IRE (right). (D) Plaque samples of LT IRE after continuous propagation for a month in the IRE/CTVM19 cell line. Well diameter captured in the photographs is 16 mm.