Briola and co-authors determined the structure of the human CTF18 clamp loader bound to PCNA to high resolution, analyzed the structure, and tested a new mechanism involving a human-specific Ctf18 ...
We used helium ion microscopy and transmission electron microscopy to visualize the early attachment events ... 0.1 M sodium cacodylate and a second staining with 0.1 % tannic acid for twenty minutes.