…It is often called the basal lamina because it is structurally completely different from the cell membrane and the membranes inside the cell. It is about 500 to 1000 Å thick, contains mucopolysaccharides and collagen fibrils, and stains black with silver staining and pink with the periodic acid-Schiff reaction (also known as PAS reaction), a method for staining carbohydrates. When viewed under an electron microscope, it is seen as a vague structure of moderate electron density along and below the cell membrane of epithelial cells at regular intervals. … *Some of the terms used in the description of "periodic acid-Schiff reaction" are listed below. Source | Heibonsha World Encyclopedia 2nd Edition | Information |
…細胞膜や,細胞内の膜とはまったく構造的に異なるので基底板basal laminaとよばれることが多い。厚さ約500~1000Åで,ムコ多糖類,膠原(こうげん)細繊維を含み,銀染色で黒く染まり,糖質の染色法である過ヨウ素酸シッフ反応periodic acid‐Schiff reaction(別名PAS反応)では桃色に染まる。電子顕微鏡でみると,上皮細胞の細胞膜にそってその下に一定の間隔を隔てて中等度の電子密度のぼんやりした構造物として認められる。… ※「periodic acid-Schiff reaction」について言及している用語解説の一部を掲載しています。 出典|株式会社平凡社世界大百科事典 第2版について | 情報 |
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