[THE SIGNIFICANCE OF FLOW VELOCITIES IN THE  VASCULAR SYSTEM OF THE KIDNEY AND OF THE FISH SWIMBLADDER FOR THE MAINTENANCE OF CONCENTRATION  GRADIENTS].
D000400:Air Sacs; D000818:Animals; D001783:Blood Flow Velocity; D002319:Cardiovascular System; D005399:Fishes; D007668:Kidney; D009995:Osmosis; D010827:Physiology
BLOOD FLOW VELOCITY; FISHES; KIDNEY; OSMOSIS; PHYSIOLOGY