- oligonucleotide SPC2996
- oltipraz
- omacetaxine mepesuccinate
- ombrabulin
- omega-3 fatty acid
- omentectomy
- omentum
- omeprazole
- Ommaya reservoir
- Omnitarg
- ON 01910.Na
- onabotulinumtoxinA
- Oncaspar
- Oncaspar-IV
- OncoGel
- oncogene
- OncoLAR
- oncologist
- oncology
- oncology nurse
- oncology pharmacy specialist
- oncolysate
- oncolysis
- oncolytic adenovirus Ad5-Delta 24RGD
- oncolytic adenovirus encoding GM-CSF
- oncolytic HSV-1716
- oncolytic measles virus encoding thyroidal sodium iodide symporter
- oncolytic virotherapy
- oncolytic virus
- oncolytic virus therapy
- Onconase
- Oncophage
- OncoVEX GM-CSF
- Oncovin
- ondansetron
- ondansetron hydrochloride
- Onrigin
- onset of action
- Onsolis
- ONTAK
- ONYX-015
- oophorectomy
- open biopsy
- open colectomy
- open label study
- open prostatectomy
- open resection
- operable
- ophthalmic
- ophthalmologist