Peritoneal Free Cells in Mice, Examined by Transmission Electron Microscopy in Thick Sections

Mouse peritoneal free cells were observed in thick sections, 1 to 1.5 μm in thickness, by the transmission electron microscope operating at an accelerating voltage of 75 or 125 kV. Electron microscopy in thick sections provided valuable images for classifying the peritoneal cells and understanding their three-dimensional features.