title: Flexner's Na+ clearances and the histological structure and age of the placenta in various species.
abstract: 1939 and the early 1940s saw the publication of a remarkable series of papers on placental transfer. For the first time, a group of investigators made a quantitative and systematic study of the transfer of a simple, presumably inert physiological solute, the sodium ion, in a number of different species at various gestational ages. The driving force behind these studies was Louis Barkhouse Flexner.
authors: Department of Physiology and Pharmacology, School of Medicine, Oregon Health Sciences University, Portland 97201, USA.
authors: J J
authors: JJ
authors: Faber
mesh_terms: D000818:Animals; D001692:Biological Transport; D001834:Body Water / Q000378:metabolism; D005260:Female; D005865:Gestational Age; D049673:History, 20th Century; D006801:Humans; D007501:Iron / Q000378:metabolism; D008431:Maternal-Fetal Exchange; D010710:Phosphates / Q000378:metabolism; D010827:Physiology / Q000266:history; D010920:Placenta / Q000033:anatomy & histology / Q000378:metabolism*; D011247:Pregnancy; D012964:Sodium / Q000378:metabolism*; D014481:United States
chemical_list: D010710:Phosphates; D012964:Sodium; D007501:Iron