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Distribution of CD68+ Monocytes/Macrophages in Human Normal Dermis

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Author:
No author available
Journal Title:
CHINESE JOURNAL OF DERMATOLOGY
Issue:
2
DOI:
10.3760/j.issn:0412-4030.2005.02.003
Key Word:
真皮;单核细胞;巨噬细胞

Abstract: 目的观察正常真皮内CD68阳性单核-巨噬细胞的分布、形态和密度.方法正常成人8例,每例均取面部、躯干、四肢近端、四肢远端、手掌和足跖6个部位皮肤进行表皮铺片和纵行与水平连续切片.CD68单克隆抗体染色,观察单核-巨噬细胞的分布.结果真皮浅层CD68阳性细胞可表现为树枝状及非树枝状,呈网状分布.真皮浅层CD68阳性细胞密度为:四肢远端(562±230)个/mm2,腹部(517±162)个/mm2,面部(509±235)个/mm2,手掌(507±192)个/mm2,四肢近端(472±138)个/mm2,足跖(361±78)个/mm2.真皮深层CD68阳性细胞密度低,多为树枝状,散在于胶原纤维间.结论 CD68阳性单核-巨噬细胞在真皮浅层形成较致密网状分布.提示单核-巨噬细胞在真皮内有明确的方向性,其防御的方向是穿透表皮进入真皮的入侵物.

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