1·The nucleolus has been studied for a long time but there have been still many arguments about nucleolar structures and function.
虽然人们对于核仁的认识已经有很长的历史了，但是人们对于核仁结构和功能方面的认识仍然有很多不同的意见。
2·These changes are discussed in relation to current knowledge about nucleolar structure as well as the organization of chromosomes and transcription factories in nuclear regions outside the nucleolus.
讨论了涉及到有关核仁结构的当前知识的这些变化，以及在核仁外部的细胞核区域中染色体和转录工厂的组织。
3·The larger nucleolus was higher in electron-density, but the inside structure was not even, sometimes there was a very large nucleolar vacuole in it.
大核仁电子密度较高，质地不均匀，有时有一个体积很大的核仁泡位于其中。