The TGTACA sequence in the MEV could therefore be recognized by the BSP1407I restriction enzyme (TaKaRa, Dalian, China), while the corresponding sequence in the CPV could not. Based on the sequence of the CPV-N strain (Genbank M19296), a specific pair of primers
(P1: 5GACTTGTGCCTCCAGGTTA-3 and P2: 5-AGTTGGTATGGTTGGTTTCC-3) were designed to cover this specific
region of the VP2 capsid protein that would generate an expected PCR product of 1016 bp.