title: Development of the NA+ AND K+ concentration in the cerebrospinal fluid of chick embryos.
mesh_terms: D000818:Animals; D001812:Blood-Brain Barrier; D001921:Brain / Q000378:metabolism; D002642:Chick Embryo / Q000254:growth & development / Q000378:metabolism*; D009929:Organ Size; D011188:Potassium / Q000134:cerebrospinal fluid*; D012964:Sodium / Q000134:cerebrospinal fluid*
chemical_list: D012964:Sodium; D011188:Potassium