Fig. 1From: Combating Acanthamoeba spp. cysts: what are the options?Life cycle of Acanthamoeba. Under harsh conditions, Acanthamoeba trophozoites transform into a resistant cyst form, while favourable conditions permit vegetative growth. a Transmission electron micrograph of trophozoite stage of Acanthamoeba. b Transmission electron micrograph of Acanthamoeba cyst. Abbreviations: Nu, nucleus; V, vacuoles; M, mitochondria; PM, plasma membrane; OU, outer membrane; IM, inner membraneBack to article page