1. Intrinsic factor is needed to absorb vitamin B 12 from food.2. Also their small range size makes them threatened by intrinsic factors . 3. Another important secretion of the parietal cells is intrinsic factor . 4. Intrinsic factor is a glycoprotein essential for the absorption of vitamin B12.5. Without intrinsic factor , the ileum can no longer absorb the B 12. 6. Intrinsic factors refer to injury mechanisms that occur within the rotator cuff itself.7. An unknown intrinsic factor may also be responsible for the species'scarcity. 8. Individuals who lack intrinsic factor have a decreased ability to absorb B 12. 9. Some intrinsic factors and characteristics of each country aggravated the problem in some countries. 10. All three of these stimulate parietal cells to secrete hydrochloric acid and intrinsic factor .