Consulta: creatorFacets:"Benmeradi, N"
Registros recuperados: 2
Data/hora: 17/06/2024 12:24:43

Ultrastructure et activite de la glande salivaire de Patella safiana LMK (Mollusque, Gasteropode)
Provedor de dados: 5
Autores: Benmeradi, S; Benmeradi, N.
The ultrastructural study of the Patella safiana salivary gland reveals two types of cells: the dark cells containing round-shaped secretory vesicles of lamellar structure and the light cells which have homogenous and fibrous secretory granules that are star-shaped sometimes. The two types of cells have the cytological characteristics of high proteosynthetic activity cells.
Tipo: Text
Palavras-chave: Patella safiana; Gastropoda; Biochemical analysis; Secretory organs; Cytology; Cells; Marine molluscs; Enzymes; Ultrastructure.
Ano: 1991
URL: http://archimer.ifremer.fr/doc/1991/acte-1712.pdf

La vitellogenese chez Patella coeruelae LMK (Mollusca, Gasteropoda). Approche ultrastructurale
Provedor de dados: 5
Autores: Benmeradi, N.
During the reproductive period, the microscopical observation of Patella coerulea ovary shows some ovogonies forming neets, supported by a conjonctive network, previtellogenic oocytes which leave gradually the conjonctive tissue and vitellogenic oocytes isolated in the acinus lumen. In early stages of previtellogenesis, an important nucleolar activity, caracterised by cloud-shaped or nematosomes and ribonucleoproteinic extrusions in cytoplasm compartment can be observed. At the end of this stage, the oocyte becomes richer in organites, mitochondria, granular endoplasmic reticulum and Golgi. We further notice the outcome of the first vitellin platelets. Production of vitellus is higher as three kinds of vitellus are observed in the following order: dark...
Tipo: Text
Palavras-chave: Ultrastructure; Oogenesis; Sexual reproduction; Vitellogenesis.
Ano: 1991
URL: http://archimer.ifremer.fr/doc/1991/acte-1720.pdf