6533b831fe1ef96bd1298417
RESEARCH PRODUCT
Primo ricerche sulla ultrastruttura dell'uovo delle Ascidie
Vincenzo Mancusosubject
food.ingredientVesicleAnatomyBiologybiology.organism_classificationlaw.inventionBasophilicfoodlawLipid dropletYolkembryonic structuresBiophysicsAnimal Science and ZoologyCentrifugationCiona intestinalisElectron microscopeHyalinedescription
Summary The cytoplasmic constituents of the unfertilized eggs of Ciona intestinalis were separated by centrifugation and studied at the electron microscope, with the following results. Lipid droplets collect at the centripetal pole; they are boundered by a thin membrane. The yolk granules are homogeneous in appearance; a few have a granular structure. Mitochondria contain numerous cristae; they accumulate in two different layers centripetally and centrifugally to the yolk granules layer respectively. Basophilic material collects at both poles of the egg in two hyaline caps: a centripetal one constituted by small Vesicles and a centrifugal represented by dense clumps. The latter, as well as the small vesicles of the centripetal pole, contain numerous granules of about 200 A in diameter.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 1959-01-01 | Bolletino di zoologia |