title: A model for passive urea reabsorption in the elasmobranch kidney.
mesh_terms: D000818:Animals; D001692:Biological Transport; D004396:Coloring Agents / Q000378:metabolism; D005399:Fishes / Q000033:anatomy & histology / Q000378:metabolism*; D007684:Kidney Tubules / Q000033:anatomy & histology / Q000378:metabolism*; D008954:Models, Biological; D010539:Permeability; D012754:Sharks / Q000033:anatomy & histology / Q000378:metabolism*; D012964:Sodium / Q000378:metabolism; D014508:Urea / Q000378:metabolism* / Q000652:urine; D014867:Water / Q000378:metabolism
chemical_list: D004396:Coloring Agents; D014867:Water; D014508:Urea; D012964:Sodium