Fig. 7.2.5.21. Melanotic neuroectodermal tumor of infancy (melanotic progonoma). N - primitive neuropil, M - neuromelanin-containing cells. Insets - premelanosomes and melanosomes. Scale = 200 nm. (Human, maxillar tumor.) Download the high resolution image; Download the high resolution image (inset a); Download the high resolution image (inset b).