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Definition of Leptomeninges

Leptomeninges: The two innermost layers of tissue that cover the brain and spinal cord. The two layers are called the arachnoid mater and pia mater.

Source: MedTerms™ Medical Dictionary
http://www.medicinenet.com/script/main/art.asp?articlekey=40029
Last Editorial Review: 3/19/2012

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