HbS 镰型细胞贫血 CCTGIGGAG 1.15kb 正常人 0.2kb Normal sickle-cell Normal sickle-cell DNA DNA DNA DNA Mst II 三 1.35kb 异常 Southern BABA BABS BSBS Gel Southemn electrophoresis Hybridization 1.35kb 1.15kb 0.2b 二HbS 镰型细胞贫血 CCTGTGGAG 正常人 Mst II 1.15kb 0.2kb 异常 1.35kb Southern ßAßA ßAßS ßSßS 1.35kb 1.15kb 0.2kb