Identification of a Feline Panleukopenia Virus from Captive Giant Pandas (Ailuropoda melanoleuca) and Its Phylogenetic Analysis

Figure 1

Virus isolation and identification. (a) The PCR results of VP2 from the four giant pandas’ feces. (b) FPV antigen was rendered fluorescent with FITC. The image was the merged image of FITC and DAPI (arrows). (c) Necrosis of Payer patches in the intestine of the infected cat in pathogenicity studies. The arrow indicated the necrosis area. (d) Villous atrophy, shed mucosal epithelium, necrotic crypt epithelial, and local inflammatory cell infiltration in the lamina propria. (e) The virus (arrows) in F81 cells by TEM. (f) The virus in the nucleus and apoptosis. The circle indicated virus, the arrow indicated the mitochondrial enlargement, and the arrowhead indicated the nuclear membrane swollen. (g) The virus particles by negatively stained.

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