摘要
对４头一月龄长白仔猪的肠粘膜肥大细胞（ＭＭＣ）、粘膜下结缔组织肥大细胞（ＣＴＭＣ）及胸腺髓质肥大细胞（ＴＭＭＣ）进行了透射电镜观察。未发现它们之间存在超微结构的显著差异。猪肥大细胞的胞浆内含有大量大小比较一致的，圆形或卵圆形的有单位膜的胞浆颗粒。胞浆颗粒内充满无定形的颗粒状基质，基质的电子密度不同。在一些胞浆颗粒内可见１－２个低电子密度区位于中央或偏中央。根据颗粒基质电子密度的差异，将猪肥大细胞的胞浆颗粒分为３个类型：Ⅰ型颗粒为高电子密度的，占６８８％；Ⅱ型为中等电子密度的，占１５．９％；Ⅲ型为低电子密度的，占１５４％。
Mast cells in the intestinal mucosa(MMC),in the connective tissue of the intestinal submucosa (CTMC)and in the thymus medulla(TMMC) from four 1-month-old Large White pigs were observed under transmission electron microscopy. No evidence shows significant ultrastructural differences among porcine MMC.CTMC and TMMC.Porcine mast cells contained characteristic granules of uniform size,with a circular or oval outline and bounded by a unit membrane.The cytoplasmic granules contain amorphous granular material but the electron density of these matrix material varied from high to low.One or two lower deuce cores were found in the center or eccenter of some granules.Based on electron density of the granule matrix, the granules could be classified into three types(Type Ⅰ,Ⅱand Ⅲ).The Type Ⅰ, Ⅱ and Ⅲ granules contain high, less high and low electron dense amorphous granular matrix, respectively.
基金
国家自然科学基金
贵州省科学基金
