FIG. 4.
Homozygous HLA-B27/hβ2m transgenic rats of the 21-4L line mount a weaker anti-Y. pseudotuberculosis CTL response than nontransgenic LEW rats. LN cells from nontransgenic LEW (solid symbols) or homozygous 21-4L (open symbols) rats infected intragastrically 3 weeks earlier with Y. pseudotuberculosis YPIII(pYV+) were restimulated in vitro with YPIII(pYV+)-infected nontransgenic LEW or 21-4L LN cells, respectively, and tested for lysis of YPIII(pYV+)-infected nontransgenic LEW (circles) or 21-4L (squares) or uninfected (triangles) lymphoblast targets.