A patient swears they make sure they eat plenty of foods rich in vitamin B12, but they still suffer from the anemia, jaundice, and weakness associated with vitamin B12 deficiency. Their doctor thinks their body might not be producing ________, which is necessary for vitamin B12 absorption.
Fill in the blank(s) with the appropriate word(s).
intrinsic factor
Anatomy & Physiology
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What will be an ideal response
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