A substance that the immune system perceives as being foreign or dangerous. The body combats an antigen with the production of an antibody.
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The Antibodies That Destroy Intrinsic Factor and the Cells that Make it in the Stomach.
Urinary MMA is a Superior Test For Detecting B12 Deficiency, and for Good Reason.
The MMA Test Teaches a Lot About Why B12 is So Important for Energy
First Study to Find a Link
The Discovery That Launched the Search for Treatment
