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Title:
Small intestine Paneth cells, light micrograph
Caption:
Light micrograph of Paneth cells showing very large eosinophilic granulations. They are located at the bottom of a Lieberkuhn crypt of the small intestine. Paneth cells are part of the innate immune system. They secrete anti-microbial compounds (as defensins and lysozyme) controlling the enteric bacteria.