Bundles of intracellular tubules in renal medullary interstitial cells.
D000818:Animals; D007668:Kidney / Q000166:cytology*; D007679:Kidney Medulla / Q000166:cytology; D008297:Male; D008854:Microscopy, Electron; D008870:Microtubules; D051381:Rats; D012519:Sarcoplasmic Reticulum