The below mentioned article provides a short note on Ankylostoma Duodenale (Old World Hook). Life Cycle of Ankylostoma Duodenale (Old World Hook): Eggs with four blastomeres (Fig. 109.29) in faeces hatch out rhabditiform larva (Fig. 109.23) in soil which develops later into filariform larva (Fig. 109.23, 24), infective to man, enters the skin, blood circulation, […]