Fig. 1

VLPs generated from recombinant baculoviruses expressing PRRSV proteins. Left Panel: Detection of PRRSV Gp5, M, N, and E proteins from recombinant baculoviruses-infected insect cells and from purified VLPs by Western blotting. Lane S: Protein standard; Lane 1: Cell lysates; Lane 2: Purified VLPs. Right Panel: TEM pictures of PRRSV VLPs