Porcine reproductive and respiratory syndrome virus strain:Prid:Pt:Isolate:Nom:Sequencing
porcine reproductive and respiratory syndrome virus strain:prid:pt:isolate:nom:sequencing
Porcine reproductive and respiratory syndrome virus strain:Presence or Identity:To identify measures at a point in time:Isolate:Nominal:Sequencing
porcine reproductive and respiratory syndrome virus strain:presence or identity:to identify measures at a point in time:isolate:nominal:sequencing