<prompt> Vitamin B12 is found maixmum in:Animal productsGreen leafy vegetablesRoots and tubersSunlight  <response>: Vitamin B12 Synthesized exclusively by microbes. Dietary sourceis exclusively ofanimal origin Vitamin B12deficiency clinical manifestations: Haematological: Megaloblastic anemia, Hypersegmentation of neutrophils. Neurological: Demyelination in peripheral nerves and spinal cord 