B12 deficiency is a common and often overlooked cause of neuropathy
Single cells of only healthy donors were kept in the reference
doi: 10.1016/j.micinf.2012.09.001 174 AshtonPDHarropRShahBWilsonRA
It means we are relying heavily on animal data and anecdotal human reports
These deficiencies might be caused by many reasons, such as anorexia, lactation, stress, or overexertion

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