DR NAJEEB LAYYOUS / SCIENCE PHOTO LIBRARY DR NAJEEB LAYYOUS / SCIENCE PHOTO LIBRARY
Foetus with cleft palate. Coloured 3-D ultrasound scan of the face of a foetus with a cleft palate, which is seen as a deep indentation beneath the nose at lower centre. The foetus' left eye is at centre, with the nose and mouth slightly to the left and below it. The right side of its face is resting against the placenta (left). Ultrasound scanning uses high-frequency sound waves to create an image of an internal structure. Foetal ultrasound scanning is routine during pregnancy.
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