Photograph of Menadione under the microscope - Vitamin k These are very striking and colourful images of what a vitamin actually looks like. I would imaginge that a great deal of people who take vitamins daily have no idea what they look like. These are very interesting images but the brief is type specific and I can't see this being an easy move to make between the two.
Cyanocobalamin (Vitamin B-12) works to promote normal growth and development, helps with certain types of nerve damage, and treats pernicious anemia. This vitamin is not available from plant sources (vegetarians beware!)