Joana Ramalho 1,2 Renato Hoffmann Nunes 1,3 Mauricio Castillo 1 1 University of North Carolina, Chapel Hill, NC 2 Centro Hospitalar de Lisboa Central,
Vitamin B 12 Julie Roche 12/7/04. Vitamin B 12 Cobalamin Porphyrin ring Cobalt Nucleotide Net charge = +1.
