Danaher designs, manufactures and markets medical, industrial and commercial products and services. Co.'s segments are: Life Sciences, which provides instruments to study genes, proteins, metabolites and cells, in order to understand the causes of disease, identify therapies, and test drugs and vaccines; Diagnostics, which provides analytical instruments, reagents, consumables, software and services that hospitals, physicians' offices, reference laboratories and other critical care settings use to diagnose disease and make treatment decisions; and Environmental and Applied Solutions, which provides products and services to protect resources and global food and water supplies.