sentence: Intrinsic factor is made by cells in the stomach.
sentences_before: A special protein, called intrinsic factor, helps the body get vitamin B12 from food such as meat, poultry and dairy foods.
sentences_after: If there is not enough intrinsic factor, the small intestine is unable to get the vitamin B12. There are several causes of pernicious anemia. These include a weakened stomach lining or a problem with the body's immune system which causes it to attack the intrinsic factor. In some rare cases is can be passed down through families. Treatment is usually a regular injection of vitamin B12.
concept_name: intrinsic factor
headings: Pernicious anemia
categories: Diseases Blood