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Diana administered the injection with her usual calm demeanour and advised me as to when I should have it topped up
A deficiency in vitamin B12 results in an insufficiency of mature red blood cells containing haemoglobin, the oxygen carrying pigment that distributes oxygen to all the tissues around the body
The principal product of that reaction is 1-methylnicotinamide
So it probably won't be cheap
And at the heart of that rhythm is one critical, non-negotiable metric: its half-life
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