| CD | Celiac disease |
| IDA | Iron deficiency anemia |
| GFD | Gluten-free diet |
| IEL | Intraepithelial lymphocytosis |
| tTG | Anti-tissue-transglutaminase antibodies |
| EMA | Anti-endomysial antibodies |
| ACD | Anemia of chronic disease |
| IFN-y | Interferon-gamma |
| TNF-α | Tumor necrosis factor-α |
| IBD | Inflammatory bowel diseases |
| Fe3+ | Ferric form |
| Fe2+ | Ferrous form |
| DCYTB | Duodenal cytochrome B |
| DMT1 | Divalent metal transporter 1 |
| MTP 1 | Metal transporter 1 |
| MICA | Major histocompatibility complex class I-related chain A |
| NKG2D | Natural killer cell receptors |
| CRP | C-reactive protein |
| H. pylori | Helicobacter pylori |
| IELs | Intestinal intraepithelial lymphocytes |
| NCGS | Non-coeliac gluten sensitivity |
| FP1 | Ferroportin 1 |
| TfR1 | Transferrin receptor 1 |
| IRP | Iron regulatory protein |
| HFE | Hemochromatosis |
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