@article {layton2012urine,
	title = {Urine concentrating mechanism: impact of vascular and tubular architecture and a proposed descending limb urea-Na+ cotransporter},
	journal = {American Journal of Physiology-Renal Physiology},
	volume = {302},
	number = {5},
	year = {2012},
	pages = {F591{\textendash}F605},
	publisher = {American Physiological Society Bethesda, MD},
	author = {Layton, Anita T and Dantzler, William H and Pannabecker, Thomas L}
}