Fig. 4From: Molecular epidemiology of canine parvovirus type 2 in Italy from 1994 to 2017: recurrence of the CPV-2b variantNumber of CPV-2 nucleotide sequences belonging to aaST01, aaST06, aaST07 and aaST14. aaST: amino acid sequence type. CPV-2: canine parvovirus type 2Back to article page