A method for exposing the rat renal medulla in vivo: micropuncture of the collecting duct.
D000818:Animals; D004594:Electrophysiology; D007668:Kidney; D007684:Kidney Tubules; D009392:Nephrectomy; D011677:Punctures; D051381:Rats; D014556:Urine; D014882:Water-Electrolyte Balance