Carnegie stage 1

From Embryology
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Early zygote.jpg

Facts: Week 1, size 0.1-0.15 mm

Features: zygote, fertilized oocyte, pronuclei, polar bodies, zona pellucida

This image shows an early human zygote where the male and female pronuclei have not yet combined to form the single zygote nucleus.

Two of the egg's polar bodies (right) are shown at the edge of the egg cytoplasm.


Additional Images


Carnegie Stages: 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | About Stages | Timeline

Cite this page: Hill, M.A. (2020, July 3) Embryology Carnegie stage 1. Retrieved from https://embryology.med.unsw.edu.au/embryology/index.php/Carnegie_stage_1

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© Dr Mark Hill 2020, UNSW Embryology ISBN: 978 0 7334 2609 4 - UNSW CRICOS Provider Code No. 00098G