细胞核体积的大小与染色体倍性程度并不总是平行的,但是Carriere等陆续证明,对于肝细胞来说,两者之间存在高度相关,而且细胞质的容积也随倍性程度的增加而增加。许多动物的各种组织和器官的细胞都可出现多倍性,多倍性系指细胞核含有的染色体数目成倍地增加(正常体细胞的染色体是二倍体)。Swartz指出倍性随年龄增长而增加, The size of the nucleus is not always parallel to the degree of chromosome ploidy, but Carriere et al. Show that there is a high degree of correlation between hepatocytes and the cytoplasmic volume increases with ploidy. Many animal tissues and organs of cells can appear polyploidy, polyploidy refers to the nucleus contains a doubling of the number of chromosomes (normal somatic chromosomes are diploid). Swartz pointed out that ploidy increases with age,