Faria A M, Garcia G, Rios M J, Michalaros C L, Vaz N M
Departmento de Microbiologia, Instituto de Ciências Biológicas, UFMG, Belo Horizonte, Brazil.
Immunology. 1993 Jan;78(1):147-51.
Maturation into adulthood, from 8 to 24 weeks of age, significantly influences the induction of oral tolerance in different strains of mice. Animals from strains which are susceptible to the induction of oral tolerance to ovalbumin (OVA) at 8 weeks of age become refractory at 24 weeks of age. Furthermore, in several strains, intermittent exposure to OVA exclusively by gavage resulted in high titres of circulating anti-OVA antibodies. However, the voluntary intake of similar doses of OVA at the same intervals failed to immunize mice of one of the most responsive strains, H-III.
从8周到24周龄成熟进入成年期,会显著影响不同品系小鼠口服耐受性的诱导。8周龄时易诱导对卵清蛋白(OVA)产生口服耐受性的品系动物,在24周龄时变得难治。此外,在几个品系中,仅通过灌胃间歇性接触OVA会导致循环抗OVA抗体的高滴度。然而,以相同间隔自愿摄入相似剂量的OVA未能使反应性最强的品系之一H-III的小鼠产生免疫。