Promastigote elongate form anterior PROMASTIGOTE 15-30 um long Flagellum one nucleus, red stained, Basal bod +Kinetoplast central in position one anterior flagellum which is just as long Nucleus as its body length. a rod like kinetoplast posterior Insect a dot-like basal body Motile MidgutPromastigote elongate form - 15 - 30 µm long one nucleus, red stained, central in position, • one anterior flagellum which is just as long as its body length. • a rod-like kinetoplast • a dot-like basal body Flagellum Basal body Kinetoplast Nucleus anterior posterior Insect Motile Midgut