A similar process happens in the oceans food chain, making marine animals rich in B12 as well
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administered substance (100 g/300 Ci/kg of radioactive [ 3 H]BPC 157) was quite wide in rats, as some of its concentrations were detected in the skin, intestine, lung, myocardium, skeletal muscle, liver, spleen, and body fat, with the highest average concentration found in the kidney
16%, respectively)
This phase keeps building up your bodys vitamin B12 stores
After this, vitamin B12 combines with a protein made by the stomach called intrinsic factor and is absorbed by the body