Danaher Corp. operates as a medical company, which designs, manufactures, and markets healthcare, environmental, and industrial equipment. It operates through the following segments: Life Sciences, Diagnostics, Dental, and Environmental & Applied Solutions. The Life Sciences segment offers a range of research and clinical tools that scientists use to study cells and cell components in order to understand the causes of diseases; identify new therapies; and test new drugs and vaccines. The Diagnostics segment comprises of analytical instruments, reagents, consumables, software, and services that hospitals, physician's offices, reference laboratories, and other critical care settings use to diagnose disease and make treatment decisions. The Dental segment develops products that are used to diagnose, treat and prevent disease and ailments of the teeth, gums, and supporting bones; as well as provide dental consumables, equipment, and services. The Environmental & Applied Solution segment engages in the development and manufacture of equipment, consumables, and software for various printing, marking, coding, design, and color management applications on consumer and industrial products. The company was founded by Steven M. Rales and Mitchell P. Rales in 1969 and is headquartered in Washington, DC.