Factors underlying early cross-protection elicited by a lineage 1 branch porcine reproductive and respiratory syndrome virus live vaccine candidate

Original dataFIG.2 Serum neutralization titers of four groups against SD-R, CH-1R, and HuN4-F112. FIG.3 Peripheral blood T-cell immune responses.FIG.4 IFN-γ-SCs were analyzed using porcine IFN-γ elispot.FIG.5 Serum cross-neutralization test and T cell proliferation in SD-R-immunized piglets. FIG.S4 IFN-γ production by T cells following in vitro restimulation with PRRSV.