What is needed for vitamin B 12 to be absorbed into the body?
A. Cobalamin.
B. Pernicious anemia.
C. Hydrochloric acid.
D. Mucoprotein enzyme.
E. Calcium.
As the article states in lines 18-20, “It was later found that a mucoprotein enzyme produced by the stomach (by the parietal cells that also make hydrochloric acid) was also needed for vitamin B12 to be absorbed into the body from the intestines.”