[On the problem of the excretion of urea by the tubular part of the nephron].
D001692:Biological Transport; D001826:Body Fluids; D006801:Humans; D007668:Kidney / Q000502:physiology*; D009399:Nephrons; D014508:Urea / Q000652:urine*
D014508:Urea
KIDNEY/physiology; UREA/urine