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			Carnegie Embryo #4430   |   Location: 2-32
		
	
		Keywords: head mesenchyme, isthmus of metencephalon, roof plate, root of trochlear nerve (CN IV), subarachnoid space, surface ectoderm, tectum of mesencephalon (M2), vascular plexus
Source: The Virtual Human Embryo.

 
	
	
	