Genetic research. Conceptual artwork showing different types of genetic research. Far left is a molecular model of deoxyribonucleic acid (DNA), showing the double helix (orange) and nucleotide bases (between helix). To the right of this are chemical diagrams of 2 of the 4 bases: thymine (top) and adenine (bottom). In the centre is a historical drawing of a male figure by Leonardo da Vinci (1452-1519). The coloured dots represent a proteomic microarray, which shows interactions between proteins. These are overlaid by a double helix showing a sequence of the four bases: adenine, thymine, cytosine and guanine. Far right are DNA autoradiograms.