11. He points out that they " are determined by intrinsic factors " within the system. 12. The presence of serum antibodies to parietal cells and to intrinsic factor are characteristic findings. 13. Spontaneous cases are considered to be caused by intrinsic factors that weaken the arterial wall. 14. The vagus normally stimulates the stomach's parietal cells to secrete acid and intrinsic factor . 15. If Crohn's disease affects the stomach, production of intrinsic factor can be reduced. 16. Tendinopathies may be caused by several intrinsic factors including age, body weight, and nutrition. 17. Intrinsic factors were addressed and extrinsic reactions were considered as emanating from forces within the person.18. An advantage of the Schilling test was that it often included Vitamin B with intrinsic factor . 19. The inadequate production of intrinsic factor also leads to vitamin B 12 malabsorption and pernicious anemia. 20. Intrinsic factor ( IF ) is a glycoprotein, with a molecular weight of 45 kDa.
