A structural protein molecule on the cell surface or within the cytoplasm that binds to a specific factor such as a hormone, antigen or neurotransmitter
Vitamin B12
Vitamin B12 (Cobalamin) Importance after Bariatric Surgery
Vitamin B12 is one of the eight B vitamins; it is a water soluble vitamin and also called cobalamin. It is worth noting that vitamin B12 is the largest and structurally the most complex vitamin.
