Hyaluronic acid, light micrograph
Hyaluronic acid, light micrograph with Rheinberg illumination. Hyaluronic acid is a polysaccharide found in the joint spaces, where it acts as a lubricant, and is also a major component of cartilage and skin. It is used to treat osteoarthritis and in eye surgery, and is also used as an anti wrinkle treatment. Magnification: x40 when printed at 10 centimetres wide. Photo by MAREK MIS/SCIENCE PHOTO LIBRARY
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