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Methylmalonic acid and homocysteine levels provide accurate diagnosis when serum B12 falls between 200-400 picograms per milliliter (the gray zone where symptoms appear but standard tests show normal results)

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B12 deficiency can cause fatigue and poor metabolism, which can be the cause of your sudden weight gain

The spectrum of chitosan showed a broad peak at 3447 cm!1 and a small peak at 2800 cm!1 corresponding to the N-H symmetrical vibration and the typical C-H stretch vibrations, respectively

In the early 1920s, Minot and Murphy demonstrated that they were able to cure PA by whole liver extracts, which were subsequently used for treatment as oral liver extract

Methionine metabolism in chronic liver diseases: an update on molecular mechanism and therapeutic implication