A study of adhesive organelles of Giardia intestinalis.

: This study revealed that the adhesive disc of Giardia lamblia trophozoite has different forms. The anterior limitation of the ventrolateral flange to the adhesive disc and its flexibility suggests its participation in the mechanism of attachment of the trophozoite. Normal intestinal crypts promote attachment of Giardia trophozoite by providing a passive mechanical barrier against the main peristaltic flow. The mechanism of attachment is described in details.