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A model of the human body showing distinct B cell clonal networks in the gastrointestinal tract. Courtesy of Alexander H. Farley A new "anatomic atlas" of how B cells -- the immune system's producer of antibodies -- link up to form networks has been charted by researchers from the Perelman School of Medicine at the University of Pennsylvania. ThisNEXT ARTICLE
An antibody is a protein produced by the body's immune system when it detects harmful substances, called antigens. Examples of antigens include microorganisms (such as bacteria, fungi, parasites, and viruses) and chemicals. Antibodies may be produc...