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human-embryo-color-enhanced.jpg 550×576 képpont

human-embryo-color-enhanced.jpg 550×576 képpont

"A color-enhanced scanning electron micrograph of a 2-3 day old human embryo, the cells of which are about 33 micrometers in diameter."

Colour-enhanced scanning electron micrograph of an early human embryo. This stage occurs at about days after fertilisation. The zona pellucida has been removed to aid visualisation. Each cell is approximately 33 microns in diameter.