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Pawlak and others reviewed studies of B12 deficiency among vegetarians and vegans using serum B12 (Pawlak, 2014) as well as methylmalonic acid and holotranscobalamin (Pawlak, 2013)
Treatment typically involves Vitamin B12 supplementation, either through oral supplements or injections, depending on the severity of the deficiency and the underlying cause
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Benzyl alcohol is a widely used pharmaceutical and laboratory preservative that disrupts bacterial cell membrane integrity and inhibits bacterial enzyme systems preventing microbial growth and maintaining the sterility of the reconstituted solution between uses
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