Attenuation and Immunogenicity of a Live High Pathogenic PRRSV Vaccine Candidate with a 32-Amino Acid Deletion in the nsp2 Protein
Figure 6
Average gross lung scores (a) and pneumonia scores (b) were recorded. The data were expressed as the mean ± S.D. from 5 pigs in each group. Different letter superscripts denote significant differences at .
