Surgery for duodenal ulcer.
D004396:Coloring Agents; D004381:Duodenal Ulcer / Q000601:surgery*; D004558:Electric Stimulation; D006801:Humans; D014628:Vagotomy / Q000009:adverse effects*; D014630:Vagus Nerve / Q000033:anatomy & histology
D004396:Coloring Agents