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Carnegie Stage Section
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accessory nerve (CN XI), cerebral aqueduct (mesocoele), decussation, endolymphatic sac, floor plate of mesencephalon, isthmus of rhombencephalon, myelencephalon, osteogenic layer, rhombencoel (fourth ventricle), roof of rhombencoel (fourth ventricle), roof plate of mesencephalon, root of vagus nerve (CN X), sulcus limitans, trochlear nerve (CN IV)
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Carnegie Embryo #9325   |   Location: 5-3-6

Keywords: accessory nerve (CN XI), cerebral aqueduct (mesocoele), decussation, endolymphatic sac, floor plate of mesencephalon, isthmus of rhombencephalon, myelencephalon, osteogenic layer, rhombencoel (fourth ventricle), roof of rhombencoel (fourth ventricle), roof plate of mesencephalon, root of vagus nerve (CN X), sulcus limitans, trochlear nerve (CN IV)

Source: The Virtual Human Embryo.