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Carnegie Stage Section
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artifact fracture(s), cerebral aqueduct (mesocoele), fiber tract in basal plate, floor plate, head mesenchyme, median sulcus, rhombencoel (fourth ventricle), subarachnoid space, sulcus limitans, tectum of mesencephalon, tegmentum of mesencephalon, trochlear nerve (CN IV)
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Carnegie Embryo #4090   |   Location: 3-19

Keywords: artifact fracture(s), cerebral aqueduct (mesocoele), fiber tract in basal plate, floor plate, head mesenchyme, median sulcus, rhombencoel (fourth ventricle), subarachnoid space, sulcus limitans, tectum of mesencephalon, tegmentum of mesencephalon, trochlear nerve (CN IV)

Source: The Virtual Human Embryo.