Birbeck granules in interdigitating cells of thymus and lymph node.
D000818:Animals; D002462:Cell Membrane / Q000648:ultrastructure; D003594:Cytoplasmic Granules / Q000648:ultrastructure*; D008198:Lymph Nodes / Q000648:ultrastructure*; D008854:Microscopy, Electron; D051381:Rats; D013950:Thymus Gland / Q000648:ultrastructure*