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The area under the curve (AUC) is shaded
A rare cause is transcobalamin II deficiency, a genetic condition where your body can't transport B12 (also known as cobalamin) in your body
The leading role of rapid heart disturbances, and thereby, the heart, lung, liver, kidney and gastrointestinal lesions, leads to inferior caval vein and superior mesenteric vein congestion
The 250500 mcg subcutaneous range used in current research contexts sits below the 1 mg clinical trial dose, partly because subcutaneous bioavailability differs from the oral administration used in some trial arms
Vegans and vegetarians may require a different approach, which could include oral supplements alongside injections, based on blood test results and dietary intake
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