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THE latest celebrity craze for tracking the progress of unborn children via home ultrasound may not be such a good idea after all.

While there is little evidence that routine scans are harmful to a developing fetus, a study of mouse pups suggests that further research into antenatal ultrasound, particularly unnecessary non-medical scans, might be warranted.

The pups showed some evidence of disrupted brain development, although the team does not yet know if their mental function is impaired.

Pasko Rakic of Yale University medical school and his colleagues injected mouse embryos with a chemical that would allow them to trace…

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