Danaher Corporation is an American healthcare company headquartered in Washington, D.C.. It develops products used for advances in biotechnology, life sciences, and diagnostics. The company operates three divisions: biotechnology, which develops products for the development of therapeutics; life sciences, which develops products to identify causes of disease, new therapies, and to test and manufacture new drugs, vaccines and gene editing technologies; and diagnostics, which develops instruments, consumables, and software and services to diagnose diseases. Danaher was founded in 1984 by brothers Steven Rales and Mitchell Rales; it was named after Danaher Creek in Western Montana, where the brothers came up with the idea for the company while fishing. The company is ranked 180th on the Fortune 500 and 241st on the Forbes Global 2000.