Polymerase chain reaction-based genetic typing of Japanese porcine reproductive and respiratory syndrome viruses.

Porcine reproductive and respiratory syndrome viruses (PRRSVs) are classified into 2 distinct genotypes: the North American type and the European type. The Japanese PRRSVs were genotyped by reverse transcriptase-polymerase chain reaction using the reported primer pairs that were either reactive to both types, specific to the North American type or specific… CONTINUE READING