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1. movements of progression elicited when the infant is held upright and inclined forward with the soles of the feet touching a flat surface; it is obtainable in the normal infant up to the age of six weeks. 2. extension of the hind leg of a dog when the plantar surface of the foot is pressed.
Ãâó: www.mercksource.com/pp/us/cns/cns_health_library.j...
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