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PMID 24248213

Starting too low may produce slower results than necessary, though this mistake is less problematic than starting too high

"The organelle of differentiation in embryos: the cell state splitter"
doi: 10.1016/j.diabet.2016.09.004

Signs You Might Be Vitamin B12 Deficient It's important for everyone, regardless of dietary choices, to be aware of potential B12 deficiency symptoms and seek medical advice if they arise

Pan et al., 2010