MUC5AC and Barrett esophagus: An intriguing point is the relationship of Barrett's metaplasia to intestinal metaplasia.26 ‘Mixed’ intestinal metaplasia occurs in the stomach,16 and online supplementary figure S6 shows that such mixed types of intestinal metaplasia show a similar pattern of TFF expression as Barrett's glands—the mucin histochemical profiles also show a mixed pattern,16 suggesting that Barrett's glands resemble the mixed metaplastic glands seen in the stomach.