The Insulin hormone is successfully isolated by Canadian doctor Frederick Banting and his assistant Charles Best, a Biochemist. The scientific work continued and two additional contributors entered the scene; Dr James R. Mcleod and James Bertram Collip, also a biochemist. The four participants had a difficult relationship.
In 1923, Banting and Macleod were jointly awarded the 1923 Nobel Prize in Physiology or Medicine "for the discovery of insulin". By 1923 Insulin was in full production available to patients. More