the structure of giardia lamblia of cyst and trophozoite. giardiasis

abdominal anaerobic anatomy anterior axoneme bacillus basal body caudal cell cyst diagram disc disease duodenalis flagella flagellated giardi giardia giardiasis illustration infection intestinal intestine isolated lamblia median medical microorganism microscopic nuclei nucleus parabasal parasite parasites parasitic phylum posterior protozoan retracted science small stomach structure trophozoite vector ventral wall