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This paper reports a pathological and immunohistochemical study of gastric carcinoma for immunoreactivity with a monoclonal antibody. MGD-1, raised against cells from an adenocarcinoma of stomach. Fifty-four of 61 gastric carcinomas (89%) were positive for MGD-1. Metastatic gastric carcinoma in local nodes was positive in all 11 such cases. Out of 40 examples of chronic atrophic gastritis, only three, with mild dysplasia, were positive (7.5%). Forty cases with normal gastric mucosa were negative. The MGD-1 detection-rate of well- and poorly-differentiated gastric carcinoma was 85% and 93% respectively. The metastatic cells and cells infiltrating the submucosa and muscular layer were more frequently positive and showed stronger staining with MGD-1 than those in mucosa. These results show that MGD-1 possesses a high degree of specificity for gastric carcinoma and could be used diagnostically.
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Chao et al. (1989) studied this question.
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