Light micrograph of a four-cell embryo

Light micrograph of a four-cell embryo

P680/0498

Rights Managed

Caption

Four-cell embryo. Light micrograph of a 4-cell human embryo. The cells, or blastomeres, result from two divisions of the fertilized egg. This stage is normally reached around 40 hours after fertilisation. The cells are surrounded by the zona pellucida layer. Photographed at the Hospital Cochin, Paris, France. Magnification unknown.

Release details

Model release not required. Property release not required.

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