[Prenatal ontogenesis of human surface cerebral arteries. A mesoscopic, histologic and electron microscopy study]

The prenatal development of the meningeal arteries in human is studied with mesoscopic (stereomicroscopic), histologic and electron microscopic methods. In the ink injected membraneous preparation it can be shown developing and arbituarisation of the arteries, arteriols and venes in the Pia mater as a topographic study. Morphometric investigations should be done. The histologic study (on plastic semithin sections) shows the cellular composition of the vessels and the electron microscopic observations help us to differentiate the cells in the developing vessel's wall.