Coccidiosis vaccine
    1.
    发明授权
    Coccidiosis vaccine 失效
    球虫病疫苗

    公开(公告)号:US4639372A

    公开(公告)日:1987-01-27

    申请号:US625882

    申请日:1984-06-29

    摘要: Sporozoites of coccidia fail to develop in chickens which are immune and many are blocked from penetrating host cells. Although previous attempts to immunize chickens with non-viable coccidial antigens have been unsuccessful it has been discovered that extracts from sporozoites or sporulated oocysts of E. tennella induce high levels of protective immunity. These extracts contain at least 15 polypeptides many of which are associated with the surface of the sporozoite and induce good immune responses. Antibody to these polypeptides blocks sporozoite-host cell penetration in vitro and neutralizes sporozoites in vivo. One or more of these polypeptides may be used as an antigen to protect against coccidiosis.

    摘要翻译: 球虫的子孢子不能在免疫的鸡中发育,许多孢子被阻止穿透宿主细胞。 虽然之前尝试用不存在的球虫抗原免疫鸡已经不成功,但是已经发现,来自子叶虫的孢子形成的卵母细胞的提取物诱导高水平的保护性免疫。 这些提取物含有至少15个多肽,其中许多与子孢子的表面相关并且诱导良好的免疫应答。 这些多肽的抗体体外阻断子孢子 - 宿主细胞的渗透,并在体内中和子孢子。 这些多肽中的一种或多种可以用作抗原以防止球虫病。