Ponovato and do-nlop In mu. co,a / ,rvae lla!Ch...-J :-:;nl Htine ~-~I ___ llfil,...,... ~... w (lnf<!Cllve Sbg,>) M A N Adu~ In lumtn of cecum Egg on Perlanal rclds (dlagno1Uc it. age) EXTERNAL ENVIRONMENT lllust,ration 15. 1 Life Cycle of Enterobius vermlcuiarls 359 