Đơn bào Entamoeba histolytica trophozoites Entamoeba histolytica cyst Entamoeba coli trophozoites Entamoeba coli cyst Giardia lamblia trophozoites Giardia lamblia cyst Plasmodium vivax trophozoites Plasmodium vivax schizonts Plasmodium vivax gametocytes Taenia sp ova Clonorchis sinensis ova Diphyllobothrium latum ova Côn trùng Anopheles sp larva Aedes sp larva Culex sp larva Xenopsylla cheopis adult Ctenocephalides canis adult Ctenocephalides felis adult Pediculus capitis adult Phthirius inguinalis adult Cimex lectularius adult Rhipicephalus sanguinius adult