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About 40% of patients with autoimmune gastritis had anemia, and these patients tested positive for anti-intrinsic factor antibodies more often than patients without anemia. Iron deficiency anemia in patients with autoimmune gastritis

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Furthermore, NNMT has been identified as a promising potential serum tumor marker in colorectal cancer, oral squamous cell carcinoma, and multiple other malignant tumor models, with its abnormal overexpression closely related to invasive tumor metastasis

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