1. Between the pia mater and the neural elements is a thin layer of neuroglial processes, firmly adherent to the pia mater.

2. The human fetus dura mater and pia mater were studied by using a scanning electron microscopy and a computer image processing system(C.

3. There are fine arterial networks in the pia mater of the brain stem.

4. Real space filled with cerebrospinal fluid located between the pia mater and the arachnoid membrane.

5. The nerve roots in epidural space segments were enwrapped in spinal pia mater, arachnoid and spinal dura mater, and the thickness of capsule gradually increased as layers grew.

6. The choroid plexus is composed of loose connective tissue of the pia mater.

7. Results Angiogenin was expressed weakly but widely in rat brain, the expression was relatively strong in cerebral pia mater, ependyma, and vessels.

8. Various part of brain substance was: medulla ( pars ventralis ), cortex ( pars dorsalis ), pia mater encephali.

9. A network of extremely small blood vessels passing between the pia mater and the cerebral cortex.