title: Permeability of the urinary bladder of the turtle, Pseudemys scripta elegans, to ammonia.
abstract: 1. The permeability of the isolated turtle urinary bladder to ammonia was investigated by varying the ratio of NH3 to NH4+ concentration in the serosal bath and measuring the flux of ammonia into the mucosal bath. 2. The permeability of the turtle bladder to NH3 was in the range of 5.4-6.1 x 10(-3) cm/sec and the permeability of the unstirred layer to NH4+ was in the range of 1.1-2.1 x 10(-5) cm/sec. 3. The flux of ammonia calculated from the permeability of NH3 can account for the decrease in mucosal H+ secretion observed with addition of NH4Cl to the serosal bath.
authors.affiliation: Section of Nephrology, University of Illinois College of Medicine, Chicago 60612.
authors.forename: J A
authors.initials: JA
authors.lastname: Arruda
authors.forename: G
authors.initials: G
authors.lastname: Dytko
mesh_terms: D000641:Ammonia / Q000378:metabolism*; D000818:Animals; D006863:Hydrogen-Ion Concentration; D066298:In Vitro Techniques; D010539:Permeability; D014426:Turtles / Q000378:metabolism; D001743:Urinary Bladder / Q000378:metabolism*
chemical_list: D000641:Ammonia