James Collip

Born: 1892

Purified Insulin. Canadian scientists Banting, Best, and Collip determined that insulin injections would help keep diabetics alive and developed techniques for extracting, isolating, and injecting it. Although not a cure, insulin remains the most effective means for treating the disease.

Died: 1965

Frank B. ColtonThe National Inventors Hall of FameLloyd H. Conover