title: The physiological effects of ionic lanthanum on the insect blood-brain  barrier.
abstract: Lanthanum had a small effect on the barrier, but did not significantly increase its sodium or potassium permeability. There was no effect on nerve conduction unless the barrier was deliberately damaged. The results lend confidence to the use of lanthanum as an extracellular tracer.
mesh_terms: D000200:Action Potentials / Q000187:drug effects; D000818:Animals; D001812:Blood-Brain Barrier / Q000187:drug effects*; D003058:Cockroaches; D007811:Lanthanum / Q000494:pharmacology*; D008297:Male; D011188:Potassium / Q000378:metabolism / Q000494:pharmacology; D012964:Sodium / Q000378:metabolism; D013116:Spinal Cord / Q000187:drug effects* / Q000502:physiology
chemical_list: D007811:Lanthanum; D012964:Sodium; D011188:Potassium