DR NAJEEB LAYYOUS / SCIENCE PHOTO LIBRARY DR NAJEEB LAYYOUS / SCIENCE PHOTO LIBRARY
Foetus' face. Coloured 3-D ultrasound scan of a foetus' face. The foetus' right eye is at centre, with the nose and mouth slightly right and below it and its right ear at left. The left side of its face is partially concealed by the placenta (right) . Ultrasound scanning is a diagnostic technique that sends high-frequency sound waves into the body via a transducer. The returning echoes are recorded and used to build an image of an internal structure. Foetal ultrasound scanning is routine during pregnancy.
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