In the duodenum, pancreatic enzymes degrade the R-protein-B12 complexes, freeing B12 to bind with intrinsic factor (IF) , a glycoprotein produced by gastric parietal cells in the stomach lining
Sequence seeking and counterstreams: a computational model for bidirectional information flow in the visual cortex
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These injections contain a synthetic version of the vitamin called cyanocobalamin and are usually given directly into a muscle by a healthcare provider
Declining estrogen and testosterone levels can lead to vaginal dryness, mood swings, sleep disturbances, and reduced sex drive