A text-book of obstetrics / by J. Clarence Webster.

  • Webster, John Clarence, 1863-1950.
Date:
1903
Catalogue details

Licence: Public Domain Mark

Credit: A text-book of obstetrics / by J. Clarence Webster. Source: Wellcome Collection.

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    PEATESI: Outer cell. Outer cells Zona pellucida. Outer cells mass. Polar bodics. Inner cells THASS,. Inner cell: Polar Inner cell bodies. Outer cells. Inner cells, 1 Inner cells. Outer cells, Inner cells Inner cells. Thickened ectoderm. Ectoderm. £cto- dertit. Entoderm. Segmentation cavity. Remains of outer cell-miass. ( Cells of Rauber.) Zona pellucida, I, 2, 3, Diagrams illustrating the segmentation of the mammalian ovum (Allen Thomson, after van Beneden). 4, Diagram illustrating the relation of the primary layers of the blastoderm, the segmentation-cavity of this stage corresponding with the archenteron of amphioxus (Bonnet).