Because B12 is primarily found in animal products (meat, fish, dairy, eggs), people following vegetarian or vegan diets may be at higher risk of deficiency
10.1371/journal.pone.0159085 173 WuL.HanZ.WangS.WangX.SunA.ZuX.et al
Both compounds would benefit significantly from independent replication, chronic safety studies, and -- if warranted by safety data -- carefully designed early human studies
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Of the factors that participate in the TSS pathway, cystathionine beta-synthase (CBS) and cystathionine -lyase (CSE) mediate the first two rate-limiting steps of TSS by condensing serine with homocysteine to cystathionine and then cysteine
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