- recombinant vaccinia-CEA-MUC-1-TRICOM vaccine
- recombinant vaccinia-TRICOM vaccine
- reconstructive surgeon
- reconstructive surgery
- recover
- recreational therapy
- rectal
- rectal cancer
- rectal reconstruction
- rectitis
- rectum
- recur
- recurrence
- recurrent cancer
- red blood cell
- red cedar
- red clover
- red date
- red elm
- reduction
- Reed-Sternberg cell
- reference interval
- reference range
- reference values
- referral
- reflux
- refractory
- refractory cancer
- Regenecare
- regeneration
- regimen
- regional
- regional anesthesia
- regional cancer
- regional chemotherapy
- regional enteritis
- regional lymph node
- regional lymph node dissection
- registered dietitian
- Reglan
- regression
- regulatory T cell
- rehabilitation
- rehabilitation specialist
- relapse
- relative odds
- relative risk
- relative survival rate
- relaxation technique
- Relenza