Histochemical detection of the position of metal microelectrode.
D000200:Action Potentials; D000818:Animals; D001001:Anura; D004558:Electric Stimulation / Q000295:instrumentation*; D004572:Electrolysis; D006651:Histocytochemistry; D007501:Iron / Q000032:analysis*; D008208:Lymphatic System / Q000502:physiology*
D007501:Iron