In order to investigate the effect of sows immunized with attenuated vaccines via genital tract rout on the local immunity and system immune level, sows were immunized with porcine reproductive and respiratory syndrome (PRRS) attenuated vaccine and Pseudorabies (Pr) attenuated vaccine via genital tract rout, respectively; To investigate the local cell-mediated immunity in genital tract, the number of intraepithelial lymphocyte (IEL ) and mast cells in the uterus and the level of IL-2 in the uterus were dete...