title: Nature of tubular aggregates.
mesh_terms: D000818:Animals; D001890:Borna Disease / Q000473:pathology*; D004216:Distemper / Q000473:pathology*; D004285:Dogs; D004721:Endoplasmic Reticulum; D008854:Microscopy, Electron; D010841:Pia Mater / Q000098:blood supply / Q000473:pathology; D011817:Rabbits; D014680:Veins / Q000473:pathology