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Six-Cell Embryo

Six-Cell Embryo [Click for next image]

Source: Centro Riproduzione Assistita, Catania, Italy.

Note:

The three-dimensional nature of the developing embryo becomes more evident with each cell division.

Label Key:

1. perivitelline space
2. zona pellucida
3. blastomere "in the middle"

All ages referenced to fertilization, not last menstrual period.

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Six-Cell Embryo

Six-Cell Embryo

Seven-Cell Embryo

Seven-Cell Embryo

Eight-Cell Embryo

Eight-Cell Embryo

Nine-Cell Embryo

Nine-Cell Embryo

Ten-Cell Embryo

Ten-Cell Embryo

Morula: Twelve-Cell Embryo

Morula: Twelve-Cell Embryo

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