-20-10, name the chemical.  30: It is typically absorbed in the ileum and the production of intrinsic factor by the parietal cells of the stomach is necessary for its absorption.  
-20-10, name the chemical.  30: It is typically absorbed in the ileum and the production of intrinsic factor by the parietal cells of the stomach is necessary for its absorption.  20: Neuroloical effects due to its deficiency, which can occur without abnormalities in the blood, include demyelination and cell death, and its isolation from the liver earned William Murphy, George Minot, and George Whipple the 1934 Nobel Prize in Physiology or Medicine.  10: Consisting of a trivalent cobalt ion inside a corrin ring, deficiency in this vitamin may result in megaloblastic or pernicious anemias.
-20-10, name the chemical.  30: It is typically absorbed in the ileum and the production of intrinsic factor by the parietal cells of the stomach is necessary for its absorption.  
Vitamin {B12} [or {cobalamin}; or {cyanocobalamin}]