Ascaris lumbricoides eggs, the parasitic roundworm eggs responsible for ascariasis, are passed in the stool of infected individuals. They are typically oval or rounded and can be identified under a microscope. Fertilized eggs are characterized by a thick, mamillated outer shell, while unfertilized eggs are larger and have a thinner shell with a more variable outer layer. #ascaris #ascarislumbricoides #parasitology #roundworm #parasites #iecn #dfasm #tapeworms #ecn #ecni #parasitologia #microscop