Both are well-established forms of B12 that the body can use
31G is thinner than 18G)
This perspective discusses the guidelines in relation to PA itself , suggests that clearer diagnostic protocols are required, and calls for clinician education to improve the patient journey for those with PA
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, dorsal thalamus, hippocampus, lateral geniculate body, hypothalamus, dorsal raphe nucleus, substantia nigra, medial anterior olfactory nucleus, lateral caudate, accumbens nucleus, superior olive)) (shown by the very precise alpha-[14C]methyl-L-tryptophan (alpha-MTrp) autoradiographic method) (16, 20)
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