4.2 减数分裂粗线期染色体 在通常的原位杂交技术中,多以中期染色体 (Metaphase chromosome)作为靶DNA 的载体,由于 受染色体结构高度凝缩的影响,其分辨率只能达到 1~3 Mb 的水平。
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The total number of G-bands was reduced by 36 percent, the absolute length of chromosome complement was contracted with 25 percent when cell mitosis proceeded from prometaphase to metaphase.
有丝分裂早中期至中期两个不同时期G-带带纹总数减少36％，染色体组的绝对长度缩短25％，带数减少的幅度大于染色体长度缩短的幅度。
The direct method to obtain chromosome metaphase from human chorionic villi is a new method of early prenatal diagnosis.
绒毛膜细胞直接法制备染色体是一种新的早期产前诊断方法。
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