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各诱变因子诱发染色体损伤所出现的无着丝点断片或环,在间期核的胞质中形成一个或多个圆形、椭圆形核块称为微核。微核测定是七十年代初期由matter等建立起来的一种新的细胞遗传学方法,和应用已久的中期染色体
Each mutagenic factor induced chromosomal damage occurs without filamentous fragments or rings, forming one or more circular nuclei in the cytoplasm, oval nuclei called micronuclei. Micronuclear assay is a new cytogenetic method established by matter et al. In the early seventies, and has been used for a long time in metaphase chromosome