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British gastroenterologist Samuel Fenwick

British gastroenterologist Samuel Fenwick (1821-1902) associated stomach atrophy with this form of anemia and demonstrated that stomach mucosa from an affected fresh cadaver could not digest boiled egg white with prolonged incubation, whereas mucosa from a control stomach could do this. (Courtesy of the Wellcome Collection. Creative Commons Attribution 4.0 International License.)

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  • Alcohol-tobacco amblyopia
  • Cerebral vascular disease
  • Dementia
  • Depression
  • Developmental delay
  • Folate deficiency
  • Gastric resection
  • Glossitis
  • Imerslund-Grasbeck syndrome
  • Malabsorption
  • Megaloblastic anemia
  • Myelopathy
  • Optic neuropathy
  • Pernicious anemia
  • Polyneuropathy
  • Regional enteritis
  • Subacute combined degeneration of the spinal cord