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A solution can look clear while still having degraded or lost a trustworthy storage history
4,5 Dietary insufficiency, pernicious anemia (i.e., an autoimmune process that reduces available intrinsic factor and subsequent absorption of vitamin B 12 1,2,6,7 ), and long-term use of metformin or acid-suppressing medications have been implicated in B 12 deficiency
The two conditions often occur together
Platelets contain alpha granules packed with growth factors: platelet-derived growth factor (PDGF), transforming growth factor beta (TGF-B), insulin-like growth factor (IGF-1), and others
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