AIM: To study the cellular and extracellular reactions of arterial wall following vascular calcium overload (VCO). METHODS: VCO was induced by treating young male Wistar rats with vitamin D_3 and a water solution containing ethanol and polyethyleneglycol-400 for 3d. Quantitative AIM: To study the cellular and extracellular reactions of arterial wall following vascular calcium overload (VCO). METHODS: VCO was induced by treating young male Wistar rats with vitamin D_3 and a water solution containing ethanol and polyethyleneglycol-400 for 3d. Quantitative