Search results for "Cortical reaction"

showing 2 items of 2 documents

Long-lasting exocytosis and massive structural reorganisation in the egg periphery during cortical reaction inPlatynereis dumerilii(Annelida, Polycha…

1995

SummaryThe course of the cortical reaction in thePlatynereis dumeriliiegg is described from live observation and from sectioned fixed material and is found to differ in several aspects from the course of cortical reactions in better-known systems. Cortical granules are unusually numerous. They are discharged by exocytosis during a period of about 25 min following fertilisation (18°C). Most of the surplus membrane material brought to the egg surface by exocytosis is set free into the perivitelline space. Swelling of egg jelly precursor secreted by cortical granule exocytosis may be causal for the detachment of the vitelline envelope from the egg cell surface which, however, remains attached …

Egg cellCytochalasin DVitelline membranePerivitelline spaceExocytosismedicineAnimalsCytoskeletonCell SizeOvumMicrovillibiologyChemistryCortical granule exocytosisNocodazoleCell MembranePolychaetaCell Biologybiology.organism_classificationOocyteCell biologyMicroscopy Electronmedicine.anatomical_structureMicroscopy FluorescenceFertilizationCortical reactionEgg jellyDevelopmental BiologyPlatynereisZygote
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A model for the cortical reaction of fertilization in the sea-urchin egg.

1953

Da una soluzione di lipovitellina (la lipoproteina del tuorlo dell'uovo di pollo) trattata con spermi vivi diArbacia lixula si ha liberazione di fosfolipidi. Questo esperimento e considerato un modello della reazione corticale di fecondazione dell'uovo di riccio di mare.

PharmacologybiologyCell BiologyAnatomyCellular and Molecular NeuroscienceHuman fertilizationmedicine.anatomical_structurebiology.animalFertilizationSea UrchinsBotanymedicineMolecular MedicineCortical reactionAnimalsMolecular BiologySea urchinEchinodermataOvumExperientia
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