| CSIN | Chemical Substances Information Network |
|---|---|
| DAWN | Drug Abuse Warning Network |
| DCN | data collection network; deep cerebral nucleus; delayed conditioned necrosis; depressed, cognitively... |
| DEN | denervation; dengue; dermatitis exfoliativa neonatorum; Device Experience Network [of the CDRH]; die... |
| DXPNET | Digital X-Ray Prototype Network |