In embryonic development, the leptomeninges are a loose network of cells lying in close contact with the surface of the brain, adjacent to the glial limitans, and intermingled with blood vessels of the perineural vascular plexus.
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Leptomeninges are first identifiable in human embryos between stages 17 and 18 and E13 in mouse.
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Multiple AncestorsSingle AncestorNo DescendantsDevelops fromPart of Parent