This section includes slides of lymph node, thymus, spleen and tonsils. Lymph node has peripheral fat and has no Central arteriole and no Hassal's corpuscles. The thymus shows Hassal's corpuscles. Spleen shows Central arterioles. Tonsil has stratified squamous epithelium. This way, on seeing lymphocytes in healthy tissue, we can determine which lymphoid tissue it is. :)
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