1 Introduction.- 2 Material and Methods.- 3 Results.- 3.1 Extracerebral (Leptomeningeal) Vascularization.- 3.2 Intracerebral Vascularization.- 3.2.1 First Stage of Intracortical Vascularization.- 3.2.2 Second Stage of Intracortical Vascularization.- 3.2.3 Third Stage of Intracortical Vascularization.- 3.3 Morphometric Evaluation of Capillaries in Different Layers of the Cerebral Cortex by Automatic Image Analysis.- 3.4 Thickness of Cerebral Cortex During Postnatal Development.- 3.5 Morphometric Evaluation of Capillaries in Different Layers of the Cerebral Cortex by Automatic Image Analysis: Changes During Aging.- 3.6 Effects of Oxygen Deficiency on Intracortical Microvessels.- 3.6.1 Early Postnatal Period (Days 414).- 3.6.2 Days 14 to 54 After Birth.- 3.6 3 Days 30 to 70 After Birth.- 3.6.4 Days 80 to 120 After Birth.- 4 Discussion.- 4.1 Methodological Considerations.- 4.2 First Stage of Intracortical Vascularization and Architecture of Intracortical Vascular Trunks.- 4.3 Second Stage of Intracortical Vascularization.- 4.4 Third Stage of Intracortical Capillarization.- 4.5 Vascular Sprouting.- 4.6 Effects of Hypoxia Upon Postnatal Capillarization.- 4.7 Intracortical Capillaries During Aging.- 5 Summary.- References.Springer Book Archives