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I know that antibodies have 2 binding sites (as Y shape) so they can bind to 2 pathogens for agglutination. They have a hinge, heavy and light chains, constant and variable sections on these chains.

But how do these structures (and any obvious structures I have missed) relate to the function of antibodies?

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closed as off-topic by Bryan Krause, David, AliceD Mar 12 '18 at 20:06

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