title: Alfred N. Richards and the discovery of the mechanism of urine formation.
mesh_terms: D049670:History, 17th Century; D049671:History, 18th Century; D049672:History, 19th Century; D049673:History, 20th Century; D007668:Kidney / Q000502:physiology*; D010414:Pennsylvania; D014556:Urine; D014563:Urodynamics