几种动物间期核染色质的电镜研究  

STUDY ON INTERPHASE CHROMATIN IN SOME ANIMAL SPECIES BY TEM

作　　者：黄建华[1] 刘凌云[1] 

机构地区：[1]北京师范大学生物学系,北京100875

出　　处：《北京师范大学学报（自然科学版）》2000年第1期95-100,共6页Journal of Beijing Normal University(Natural Science)

基　　金：国家自然科学基金资助项目!(392 70 40 2 )

摘　　要：用电镜对不同种动物细胞间期核染色质进行了研究 ,结果表明染色质在间期核内有不同结构层次 ,其中主要是直径为 2 0～ 30nm纤维 ,也有较多 10nm纤维 .不同种动物间期核染色质的存在形式和排布有一定差异 .赤链蛇肝细胞间期核没有聚集的异染色质区 ,整个核内均匀分布着直径为 2 0nm的纤维 .乌鸡红细胞间期核染色质直径为 2 0～ 30nm的纤维呈“念珠”状颗粒结构 ,并以此结构锚定在核纤层上 .The interphase chromatins of four animal species are studied by TEM. It is revealed that the interphase chromatin fibers have various levels of organization, among which the 20～30 nm fibers are major and the 10 nm fibers are next. There are certain diferrences in various animal species. The 20～30 nm fibers of chromatin in interphase nuclei of Gallus gallus var. domessticus presents a “bead like” structure, which forms its electron densed regions of heterochromatin. Chromatin fibers are anchored to nuclear lamina by this structure. The arrangement and organization of heterochromatin in various animals have obvious diferrences.

关 键 词：间期核 染色质 超微结构 电镜研究 

分 类 号：Q243[生物学—细胞生物学]