– angiogenesis – angiogenesis inhibitor – angioimmunoblastic T-cell lymphoma – angiosarcoma – angiostatin – angiotensin-converting enzyme inhibitor – anhydrovinblastine – anidulafungin – animal model – annamycin – anorexia – ansamycin – antagonist – anterior mediastinotomy – anterior mediastinum – anthracenedione – anthracycline – anthraquinone – anti-CEA antibody – anti-idiotype vaccine – anti-inflammatory – antiandrogen – antiandrogen therapy – anti-angiogenesis – antiangiogenic – antibody – antibody therapy – anticachexia – anticancer antibiotic – anticarcinogenic – anticoagulant – anticonvulsant – antidepressant – antiemetic – antiestrogen – antifolate – antifungal medication – antigen – antigen-presenting cell – antigen-presenting cell vaccine – antiglobulin test – antihormone therapy – antimetabolite – antimicrotubule agent – antimitotic agent – antineoplastic – antineoplastic antibiotic – antioxidant – antiparasitic – antiretroviral therapy – antisense c-fos – antithymocyte globulin – antituberculosis – antitumor antibiotic – Antiviral drug – anxiolytic – APC – APC vaccine – APC8015 – apheresis – aplastic anemia – aplidine – apocrine gland – apolizumab – apoptosis – appendix – arctigenin – arctiin – arginine butyrate – aromatase inhibitor – arsenic trioxide – arteriogram – arteriography – asbestos – ascites – asparaginase – aspartate transaminase – aspergillosis – Aspergillus – asthenia – astrocyte – astrocytoma – asymptomatic – atamestane – ataxia – ataxia-telangiectasia – ataxic gait – atelectasis – athymic nude mouse – ATLL – ATP – atrasentan – atypical hyperplasia – ATRT atypical teratoid/rhabdoid tumor – augmerosen – autoimmune disease – autologous – autologous bone marrow – autologous bone marrow transplantation – autologous lymphocyte – autologous stem cell transplantation – autologous tumor cell – Avastin – axilla – axillary artery – axillary bud – axillary dissection – axillary lymph node – axillary lymph node dissection – axillary nerve – axillary vein – azacitidine – azoxymethane – AZQ – AZT B B cell – B lymphocyte – B3 antigen – B43-PAP immunotoxin – B7-1 – Bacillus Calmette Guérin – bacterial toxin – barium enema – barium solution – barium swallow – Barrett's esophagus – basal cell – basal cell carcinoma – basal cell nevus syndrome – basophil – batimastat – BAY 12-9566 – BAY 43-9006 – BAY 56-3722 – BAY 59-8862 – BB-10901 – BBBD – BBR 2778 – BBR 3464 – BCG – BCG solution – bcl-2 antisense oligodeoxynucleotide G3139 – BCX-1777 – Beckwith-Wiedemann syndrome – beclomethasone – Bellini duct carcinoma – bendamustine – benign – benign proliferative breast disease – benign prostatic hyperplasia – benign