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Please use this identifier to cite or link to this item: http://hdl.handle.net/1807/20205

Title: Ultrastructural observations of the vitelline cells of Metamicrocotyla macracantha (Monogenea, Microcotylidae)
Authors: Baptista-Farias, Maria de Fatima Diniz
Kohn, Anna
Keywords: Metamicrocotyla macracantha - ultrastructure - vitelline cells - Monogenea - Microcotylidae
Issue Date: 31-Dec-1998
Publisher: Fundação Oswaldo Cruz, Fiocruz
Citation: Memórias do Instituto Oswaldo Cruz (ISSN: 1678-8060) Vol 93 Num 4
Abstract: An electron microscopic study of the vitelline follicles of Metamicrocotyla macracantha (Alexander, 1954) Koratha,1955 showed that they are composed of cells in different stages of development. The immature cells have a large nucleus, nucleolus, cytoplasm with free ribosomes and few mitochondria. The developing vitelline cells present granules which are small in the early stages, increasing with maturity. The mature cells have an extensive granular endoplasmic reticulum and droplets of shell-protein; with maturation, clusters of shell protein and yolk bodies are formed and released in the ciliated vitelline ducts. Vitelline development is continuous and all of the cellular stages involved can be found in each follicle. {P}
URI: http://hdl.handle.net/1807/20205
Other Identifiers: http://www.bioline.org.br/abstract?id=oc98105
Rights: Copyright 1998 Fundacao Oswaldo Cruz - Fiocruz
Appears in Collections:Bioline International Legacy Collection

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