title: [Experimental studies on electric acupuncture therapy. (3) Effect of polarity on electric needle stimulation].
mesh_terms: D015670:Acupuncture Therapy; D000328:Adult; D000368:Aged; D004558:Electric Stimulation; D004560:Electricity; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged