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Symptoms of Vitamin B12 Deficiency Vitamin B12 deficiency often develops gradually

Because B12 in its organic form comes from animal sources like fish, meat, eggs and dairy, vegans, vegetarians and people with nutrient deficient diets need B12 supplementation to meet minimal health requirements

Nanobody: the magic bullet for molecular imaging

R., McCaddon, A., Ahmadi, K

Thus, while the estimation of the amount of a loading dose may be quite correct, the rate of administration can sometimes be crucial in preventing excessive drug concentrations, and slow administration of an intravenous drug (over minutes rather than seconds) is almost always prudent practice