[Antigens from Giardia lamblia trophozoites and cysts. Detection and immunoallergic evaluation].

A suitable technique for the preparation of antigen extracts from Giardia lamblia trophozoites and cysts is described. The immunoallergic characteristics of the antibodies obtained with these extracts were studied using in vivo and in vitro tests in experimental animals and 50 healthy individuals. It was proved that the human is able to produce antibodies to Giardia lamblia trophozoites and cysts and also that these antibodies are directed to several antigenic determinants.