Fig. 1From: Sensitivity and specificity of a real-time reverse transcriptase polymerase chain reaction detecting feline coronavirus mutations in effusion and serum/plasma of cats to diagnose feline infectious peritonitisMorphological and immunohistochemical diagnosis of feline infectious peritonitis (FIP) featuring typical effusion cytology (a), subcapsular changes in visceral organs (b; liver), inflammatory and fibrinonecrotic changes (c) and macrophages immunopositive for feline coronavirus (FCoV) antigen (d). Staining: a,c: haematoxylin-eosin; d: haematoxylin. Scale bar: 75 μm for a and c; 1 cm for b, 25 μm for dBack to article page