Ultrathin sections were trim onto grids, stained with uranyl lead and acetate citrate, and examined using a JEM-1400 (JEOL USA) transmission electron microscope, and photographed digitally
Ultrathin sections were trim onto grids, stained with uranyl lead and acetate citrate, and examined using a JEM-1400 (JEOL USA) transmission electron microscope, and photographed digitally....