Abstract
After man's exploration of space in the 1960's, many voices pleaded for the application of modern technology to the solution of some of the world's more common maladies. To biologic scientists it seemed inevitable that the advances in technology and instrumentation made by colleagues in the physical sciences would be employed to overcome human illnesses. Theoretically, pathologic states characterized by abnormalities in feedback systems should be especially vulnerable to intervention by mechanical instrumentation. In diabetes mellitus, the homeostatic feedback between glucose and insulin is distorted or destroyed completely. Hence, this disorder seemed a likely candidate for attack by bioengineers. And, . . .