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Message definition (Atheroma ) ==Histology== The accumulation (swelling) is always in the '''tunica intima''', between the [[endothelium]] lining and the smooth muscle [[tunica media|middle layer]] of the artery wall. While the early stages, based on gross appearance, have traditionally been termed [[fatty streaks]] by pathologists, they are not composed of [[fat cells]] but of accumulations of [[white blood cells]], especially [[macrophages]], that have taken up oxidized [[low-density lipoprotein]] (LDL).
組織学
蓄積(腫脹)は常に動脈壁の内皮 内層と平滑筋中層 の間の内膜 に生じる。肉眼的外観に基づく初期段階は、病理学者によって伝統的に脂肪線条 と呼ばれてきたが、それらは脂肪細胞 から構成されているのではなく、酸化された低比重リポ蛋白 (LDL)を取り込んだ白血球 、特にマクロファージ の蓄積から構成されている。