The innermost of the three mammalian meninges covering the brain and spinal cord.
hog:0000466 hindbrain pia materhog:0000467 midbrain pia materhog:0000468 spinal cord pia materhog:0000475 diencephalon pia materhog:0000476 telencephalon pia materBFO:0000050 part of
hog:0000013