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Ultrasound Scans: Track Your Pregnancy Week-by-week

by Helen Turnbull ,
Ultrasound Scans: Track Your Pregnancy Week-by-week
Ultrasound scan at 4 weeks and 4 days of pregnancy: the egg is visible in the form of a small vesicle measuring 3mm in diameter and surrounded by a halo corresponding to the future placenta. The egg is implanted in the endometrium (lining of the womb).
Helen Turnbull