Division of the L. tropica promastigotes in axenic development. Cell with 2 flagella single kinetoplast and single nucleus (A), Cells with single flagellum, two kinetoplasts and single nucleus (B), Cell with Single flagellum, two kinetoplasts and two nuclei (C) and Cells with two flagella, two kinetoplasts and two nuclei near to the completion of cytokinesis (D). Solid arrows show kinetoplasts and the others indicate flagella.