Cryptosporidium parvum

Histological section of developmental stages within intestine of suckling mouse, 4 days post-infection	Acid fast stain showing oocysts (dark red) as differentiated from yeast (dark blue) from feces of calf	Developmental stages within intestine of suckling mouse, 4 days post-infection. Numerous type I merozoites can be seen.	Lower magnification showing the extent of developmental stages within intestine of suckling mouse, 4 days post-infection