Coleman J R, Okada S
Biophys J. 1968 Oct;8(10):1098-103. doi: 10.1016/S0006-3495(68)86541-5.
A fraction of DNA, known to be replicating, was examined in the electron microscope. Characteristic branch points were identified as sites at which replication had been taking place. No localized strand separations, nor other structural alterations were discernible at these points.
一小部分已知正在复制的DNA在电子显微镜下进行了检查。特征性分支点被确定为复制发生的位点。在这些点上没有观察到局部链分离或其他结构改变。