Figure 2
From: Emergence of Different Recombinant Porcine Reproductive and Respiratory Syndrome Viruses, China

The results of the immunofluorescence assay. (A) PAMs inoculated with SDlz1601. (B) PAMs inoculated with SDYG1606. (C) PAMs inoculated with SDhz1512. (D) Positive control cells inoculated with SX-1. (E) PAM control cells.