Vitamin B12 is absorbed through two pathways. The first is intrinsic factor, a protein produced by parietal cells in the stomach. IF binds B12 in the small intestine and carries it across B12 INJECTIONS The Nurse Clinic Choosing the Right Needle and Syringe for B12 Injections: A Complete Guide Vitamin B12 Shots in Canton, MI: What You Need to Know Mike O'Hearn Should You Inject B12 MUST WATCH YouTube
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