Immunofluorescence - Definition

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Immunofluorescence, rarely called the Coons' method, is a laboratory technique that can detect the presence of various substances using antibodies that are made fluorescent, which will bind to it. Dying the antibodies, then observing them when exposed to a special light, makes it easy to detect and identify substances on which they settle. This method is used when looking for bacteria or antibodies in biological samples. Immunofluorescence is used in the diagnosis of autoimmune diseases.