%0 Journal Article %T Bottlenecks in the transmission of porcine reproductive and respiratory syndrome virus (PRRSV1) to na£¿ve pigs and the quasi-species variation of the virus during infection in vaccinated pigs %A Emanuela Pileri %A Enric Mateu %A Gastš®n Arocena %A Gerard Martšªn-Valls %A Martšª Cortey %J Archive of "Veterinary Research". %D 2018 %R 10.1186/s13567-018-0603-1 %U https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6389235/