"David Ruchien Liu"@en . . . "1973-06-12Z"^^ . . "American chemist" . . . . "Liu, David R."@en . . . . "1973Z"^^ . "David Ruchien Liu (born June 12, 1973 in Riverside, California) is an American chemist and chemical biologist, best known for his work on the directed evolution of biological and synthetic molecules, and as a founder of biotechnology companies."@en . .