rBAT - retraction
- REFSA
- RefSeq
- Refsum
- Refsum disease
- Refsum disease (syndrome)
- Refsum’s disease
- Refsum's disease
- refusion
- REG
- Reg
- reg
- reg rhy
- regainer
- regainer-maintainer
- Regan isoenzyme
- Regaud
- Regaud residual body
- Regaud tumor
- regen
- Regenerate
- regeneration
- regenerative
- regenerative medicine
- regenerative nodule
- regenerative polyp
- regia
- regime
- Regimen
- regio
- regio analis
- regio antebrachialis
- regio antebrachialis anterior
- regio antebrachialis posterior
- regio antebrachii anterior
- regio antebrachii posterior
- regio auricularis
- regio axillaris
- regio brachialis
- regio brachialis anterior
- regio brachialis posterior
