title: Fine structure of epidermal mucous cells of some Brazilian earthworms (Oligochaeta:Annelida).
abstract: Electron microscopic techniques were adopted to study the comparative morphology of the secretory granules of the epidermal mucous cells of 4 species of brazilian earthworms. 2 main types of secretory granules were described: A first type, presenting a central body with a high electron density and surrounded by a material with variable aspects and electron densities. The second type of secretory granule possesses an homogeneous aspect and a relatively low electron density. The size and the morphology of secretory granules reveal significant variations among the species and also inside a single specie.
mesh_terms: D000818:Animals; D001938:Brazil; D003594:Cytoplasmic Granules / Q000648:ultrastructure; D000078404:Epidermal Cells; D004817:Epidermis / Q000648:ultrastructure*; D008854:Microscopy, Electron; D009093:Mucus / Q000378:metabolism; D009835:Oligochaeta / Q000033:anatomy & histology*; D009940:Organoids / Q000648:ultrastructure; D013045:Species Specificity