Computerized Axial Tomography

Contact Lens

Cortisone

Cryogenics

Curare

Cyclosporine

DDT

Defibrillator and Cardioverter

Dental Drill

Dental Fillings, Crowns, and Bridges

Deoxyribonuclease

Dialysis Machine

Dick Test

Digitalis

DPT Vaccine

Electrocardiograph (ECG)

Electroencephalogram (EEG)

Embryonic Transfer

Endorphin and Enkephalin

Endoscope