DNA printing is based on the natural flow of genetic information in a cell from DNA through RNA to amino acids to proteins, from gene to protein, genome to proteome, genomics to proteomics. DNA, life's foundation blueprint, makes up genes, the instructions for making proteins — the complex molecules that do most of the work in living organisms. "DNA makes RNA makes proteins make Life." That simple formula, which has worked well for life on Earth for at least half a billion years, very recently has turned into a trillion-dollar modern global industry based on an updated formula: "People make DNA."