Sutured wound, SEM (Colored scanning electron micrograph (SEM) of a suture in a dog’s skin wound. Magnification: x20 when printed at 10 centimetres wide. Credit: STEVE GSCHMEISSNER/SCIENCE PHOTO LIBRARY)
These are eyebrow hairs growing from the surface of human skin. The images were captured using a variety of traditional light-based microscopes, powerful scanning electron microscopes (which bombard the subject with electrons and build the image using a computer) and transmission electro microscopes.