cleavage

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See time-lapse microphotography of blastomeres created by mitotic cleavage of embryonic cells

first stages of human development

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Timeline of the 2000s

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7 of History's Most Notorious Serial Killers

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7 of the World’s Deadliest Plants

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first stages of human development

See time-lapse microphotography of blastomeres created by mitotic cleavage of embryonic cells

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Topics

meroblastic cleavage mitosis blastomere blastocyst morula blastula blastoderm micromere hypoblast blastocoel notochord sexual differentiation gestational age implantation segmentation induction histogenesis organogenesis neural crest umbilical cord