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Carnegie Stage Section
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L-4 spinal ganglion, L-5 / S-1 intervertebral disc, L-5 spinal ganglion, ala of sacrum, anal canal, dorsum of right foot, gluteus maximus muscle, inferior rectal nerve, left foot, neural arch of L-4 vertebra, neural arch of L-5 vertebra, notochord, pelvic plexus, sciatic nerve, sympathetic trunk
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Carnegie Embryo #4090   |   Location: 23-21

Keywords: L-4 spinal ganglion, L-5 / S-1 intervertebral disc, L-5 spinal ganglion, ala of sacrum, anal canal, dorsum of right foot, gluteus maximus muscle, inferior rectal nerve, left foot, neural arch of L-4 vertebra, neural arch of L-5 vertebra, notochord, pelvic plexus, sciatic nerve, sympathetic trunk

Source: The Virtual Human Embryo.