Fig. 12

Developmental stages of Cryptosporidium chipmunk genotype I in transmission electron microscopy. a Oocyst with four sporozoites (s), residual body (rb) with amylopectin granules (ag), forming oocyst wall (ow) in parasitophorous sac (ps); b early trophozoite with one nucleus (n) inside parasitophorous sac (ps) and attached to microvilli border (mb) with feeding organelle (fo); c later trophozoite with one nucleus (n) inside parasitophorous sac (ps) and attached to microvilli border (mb); d early meront covered with parasitophorous sac (ps) with forming eight merozoites (me) connected to residual body (rb); e cross section of mature meront covered with parasitophorous sac (ps), fully developed eight merozoites (me) with visible nucleus (n) and connected to host cell by feeding organelle (fo); f cross section of early meront with forming four merozoites (me) with visible nucleus (n) and covered with parasitophorous sac (ps); g cross section of mature meront with fully developed four merozoites (me), covered with parasitophorous sac (ps) and attached to host cell by feeding organelle (fo); h empty parasitophorous sac (ps) attached to the host cell by feeding organelle (fo); i released merozoites (me) with visible nucleus (n); j early microgamont (mi) and attached to the host cell by feeding organelle (fo); k macrogamont covered with parasitophorous sac (ps) with foam-like appearance caused by amylopectin granules (ag) and visible nucleus (n); l zygotes with amylopectin granules (3), developing oocyst wall (1), parasitophorous sac (2). Bar = 1 um