对841名血液病(慢性和急性白血病,白血病前期改变,真性红细胞增多症和具有发展为白血病倾向的疾患)及可疑患者骨髓作细胞遗传学检查的结果,发现多倍体细胞在10%以上者有11名。多倍体细胞的标准为染色体在65个以上者。各患者和同一患者的各多倍体细胞间染色体的数目变异甚大。有四例染色体为四倍或近四倍体,另一例以八倍体细胞系为主。结构异常的标记染色体见于8名患者。 As a result of cytogenetic examination of 841 hematological diseases (chronic and acute leukemia, pre-leukemia, polycythemia vera, and disorders having a propensity to develop leukemia) and suspected bone marrow, it was found that polyploid cells were present in 10% or more There are 11. Polyploid cells for the standard chromosome 65 in more than. The number of chromosomes between each polyploid of each patient and the same patient varies greatly. Four cases of chromosomes were four times or nearly tetraploids, another case of octoploid cell lines. Structural abnormalities in the marker chromosome seen in 8 patients.