染色质小体(howell jolly bodies)又称“豪-若体”。为成熟红细胞核片。呈圆形,大小约1~2μm,染紫红色,位于成熟或幼红细胞的胞浆中,可一个或数个,已经证实它是核残余物。见于脾切除后、无脾症、脾萎缩、脾功能低下、红白血病、某些贫血(巨幼细胞贫血、溶血性贫血)。
NBT还原实验发现部分早幼粒白血病细胞胞奖内出现紫蓝色颗粒,并见到核碎解成染色质小体(凋亡小体)。
Part of the acute promyelocytic leukemia cells appeared indigo granules and apoptosis body in plasma through NBT test.
核小体是染色质的基本单位。
研究人员怀着了解两种不同的甲基化标记怎样影响核小体和染色质结构的目的开始工作。
The researchers began their work with the goal of learning how two different methylation marks affect the overall structure of nucleosomes and chromatin.
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