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Alignment of the deduced amino acid sequences of a fragment of the 583 bp amplicon of the VP2 gene amplified by PCR from clinical samples (aa 407–456). The aligned sequences correspond to a vaccine strain (CPV2, M38245), a CPV2a reference strain (CPV2a, M24003), a CPV2b reference strain (CPV2b M74849), an Italian CPV2c strain (FJ222821.1), and Argentine CPV2a, CPV2b and CPV2c variants. The positions 426 and 440 are highlighted.
