Adoptive transfer of immunity with peritoneal exudate cells to the cestode Hymenolepis nana.

Under certain conditions, peritoneal exudate cells (PEC) removed from Hymenolepis nana-eggs infected mice, transferred to normal recipients severely inhibited the establishment of worms from a challenge infection, as expected in an immune state. A close relationship was observed between numbers of challenge worms and immune response. A significant effect was clearly demonstrable when the highest dose of eggs (150) was used, but the effect was less and not significant different when a smaller doses (30) was administered.