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What made his discovery remarkable was the observation that this small molecule caused old liver tissue to synthesize proteins like younger tissue
Most of the other species lack synthesis but are able to import it from the medium
These include the severity of deficiency, medical conditions, age, and weight
Unlike oral B12 supplements, which depend on intrinsic factor production in the stomach for absorption and lose 5070% bioavailability in the digestive process, injectable B12 achieves near-100% bioavailability by delivering the vitamin directly into circulation
This is a great ingredient for dry, compromised, or aging skin
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