The dual color probes CEP 7 labeled by SpectrumGreen and D7S486 (locus at 7q31) labeled by SpectrumOrange were used.

• 应用双色荧光直接标记的 7号着丝粒探针 (CEP7,光谱绿 )和 7q31基因序列探针 (D7S4 86 ,光谱桔红 ) ,15份正常样本作为对照。