Marilyn CD4 cells reject MB49 tumor in vivo better than MataHari CD8 cells. (A) Survival of RAG.KO mice (dashed line), MataHari mice (circles) or Marilyn mice (triangles) after challenge with MB49 tumor cells. (B) Survival of RAG.KO mice that were infused one day after tumor challenge with 10⁶ MataHari cells (circles) or 10⁵ Marilyn cells (triangles) or no cells (dashed line).