A hyper-realistic, cross-sectional 3D medical illustration showing the progressive buildup of arterial plaque (atherosclerosis) inside a human artery. The scene begins with a healthy, smooth, reddish-pink artery wall, rich in oxygenated blood. Gradually, fatty deposits of LDL cholesterol begin to accumulate along the inner lining (intima), forming yellowish, lumpy plaques. As the buildup increases, macrophages and white blood cells cluster around the area, creating foam cells and contributing to the thickening of the arterial wall. Calcium deposits begin to harden parts of the plaque. The artery visibly narrows, restricting blood flow. The final frame shows a dangerously clogged artery with turbulent blood flow and a potential rupture point forming, symbolizing the risk of heart attack or stroke. Emphasize biological textures, cellular accuracy, and vascular detail, using dramatic lighting to highlight the transition from health to disease.