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Thus, the radioactivity excreted in the urine during the 24 hours following the administration of the labeled B12 will reveal the answer
Hemoglobin also takes carbon dioxide from different areas of your body and brings it to your lungs, so your lungs can get rid of it when you exhale
This can be due to having low levels of intrinsic factor in the digestive system, having a digestive condition, or following a plant-based diet
But the reality is far more nuanced, touching on everything from gastrointestinal physiology to the molecular stability of the peptide itself
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