part of part of diencephalon pia mater meninx of diencephalon forebrain pia mater diencephalon pia mater MA:0000829 interbrain pia mater of neuraxis EHDAA2:0000400 VHOG:0000475 interbrain pia mater pia mater of neuraxis of diencephalon diencephalon pia mater of neuraxis pia mater of neuraxis of between brain between brain pia mater of neuraxis UBERON:0003553 In fishes, the meninges consist of a single membrane, the primitive meninx, wrapped around the brain and spinal cord. With the adoption of terrestrial life, the meninges doubled. In amphibians, reptiles, and birds, the meninges include a thick outer dura mater derived from mesoderm and a thin inner secondary meninx. (...) In mammals, the dura mater persists, but division of the secondary meninx yields both the arachnoid and the pia mater from ectomesoderm.[well established][VHOG] pia mater of neuraxis of mature diencephalon pia mater of between brain pia mater of diencephalon A pia mater that is part of a diencephalon [Automatically generated definition]. pia mater of interbrain Pia mater that is part of the diencephalon. [Bgee_curator][VHOG] EMAPA:17767 between brain pia mater pia mater of mature diencephalon mature diencephalon pia mater pia mater of neuraxis of interbrain mature diencephalon pia mater of neuraxis