Enteroepithelial stages of T. gondii, 6 days after feeding tissue cysts to a cat. (A) Histological section of a villus in small intestine. Note heavy infection of epithelial cells with T. gondii types (t), male gamonts (m), and numerous uninucleate female gamonts (f). Cells in the lamina propria are not infected (Haematoxylin and eosin; bar = 15 μm). (B) Impression smear. Note a type D schizont with 20 merozoites (Giemsa; bar = 10 μm). (C) Impression smear. Three biflagellate microgametes (arrows) and two free merozoites (arrowheads) (Giemsa; bar = 10 μm).