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[1] Renal function should be monitored if significant gastrointestinal symptoms or dehydration occur
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Are you applying it topically, injecting it subcutaneously, or using another method
Castle later labeled the essential substance secreted by a normal stomach as intrinsic factor and the substance present in food as extrinsic factor. Subsequent studies showed that the intrinsic factor serves as an intestinal transport vehicle for the extrinsic factor (later identified as vitamin B12) (139)
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