V I T E L L I N E M E M B R A N E A N D C O R T I C A L P A R T I C L E S 229
2
FIG. 1. Diagram of a cortical particle in a mature egg (Paracentrotus
type).
Abbreviations: 1, lamella constituted by coiled filaments and a basal region, br; el,
extralamellar bodies showing fibrous connections with the lamella; m, matrix; i and
e, interior and exterior region of the matrix; mb, membrane. Dist. and Prox., distal
and proximal poles of the particle; at Prox. there are connections between br and
mb.
FIG. 2. Cortical particle of Brissopsis lyrifera. To the left, cortical particle;
lamella with shanks. Left arrow indicates connection between lamellar shank and
membrane of particle, the membrane with adjacent ribosomes and endoplasmic
vesicles. To the right (horizontal arrow), dense body vesicle, χ 45,000. (Baxandall.)
FIG. 3. Diagram of a cortical particle (Brissopsis type). Abbreviations: al, attachment of lamella to membrane; m, matrix; el, extralamellar bodies; mb, membrane;
Dist. and Prox., distal and proximal poles of the particle.
2
FIG. 1. Diagram of a cortical particle in a mature egg (Paracentrotus
type).
Abbreviations: 1, lamella constituted by coiled filaments and a basal region, br; el,
extralamellar bodies showing fibrous connections with the lamella; m, matrix; i and
e, interior and exterior region of the matrix; mb, membrane. Dist. and Prox., distal
and proximal poles of the particle; at Prox. there are connections between br and
mb.
FIG. 2. Cortical particle of Brissopsis lyrifera. To the left, cortical particle;
lamella with shanks. Left arrow indicates connection between lamellar shank and
membrane of particle, the membrane with adjacent ribosomes and endoplasmic
vesicles. To the right (horizontal arrow), dense body vesicle, χ 45,000. (Baxandall.)
FIG. 3. Diagram of a cortical particle (Brissopsis type). Abbreviations: al, attachment of lamella to membrane; m, matrix; el, extralamellar bodies; mb, membrane;
Dist. and Prox., distal and proximal poles of the particle.