contact with the immune system of non anti-helminthic treated mice. We compared, by SEM,
the tegument of adult worms recovered from strains of mice genetically selected to extreme
phenotypes of resistance (TR strain) and susceptibility (TS strain) to egg-albumin oral
tolerance (OT). The parasites recovered from TR mice displayed no morphologic alteration,
while specimens collected from TS mice presented tubercle swelling with blunted and …