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Carnegie Stage Section
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L-4 spinal ganglion, L-5 spinal ganglion, ala of sacrum, caudal edge of left foot, caudal eminence, dorsum of right foot, edge of ilium, gluteus maximus muscle, ischiorectal fossa, levator ani muscle, neural arch of L-5 vertebra, notochord, subarachnoid space
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Carnegie Embryo #4090   |   Location: 24-3

Keywords: L-4 spinal ganglion, L-5 spinal ganglion, ala of sacrum, caudal edge of left foot, caudal eminence, dorsum of right foot, edge of ilium, gluteus maximus muscle, ischiorectal fossa, levator ani muscle, neural arch of L-5 vertebra, notochord, subarachnoid space

Source: The Virtual Human Embryo.