China 
Africa 
- Antibacterial soap
- Antibiogram
- Antibiosis
- Antibiotic associated diarrhea
- Antibiotic misuse
- Antibiotic prophylaxis
- Antibiotic resistance
- Antibiotic resistant bacteria
- Antibiotic sensitivity
- Antibiotic susceptibility testing
- Antibiotic-antimycotic
- Antibiotic-associated diarrhea
- Antibiotic-resistant bacteria
- Antibiotics
- Antibodies
- Antibody
- Antibody drug conjugates
- Antibody elution
- Antibody engineering
- Antibody microarray
- Antibody opsonization
- Antibody response
- Antibody titer
- Antibody-drug conjugates
- Anticaking agents
- Anticalin
- Anticancer
- Anticarcinogen
- Anticholinergic syndrome
- Anticholinergics
- Anticholinesterases
- Anticipation
- Anticipatory anxiety
- Anticipatory grief
- Anticoagulant therapy
- Anticoagulants
- Anticoagulation
- Anticoagulation therapy
- Anticodon
- Anticodons
- Anticonvulsants
- Antidepressant discontinuation syndrome
- Antidepressant medications
- Antidepressants
- Antidiarrhoeal
- Antidiuretic
- Antidote
- Antidotes
- Antidromic
- Antiemetics
- Antiestrogens
- Antifeedants
- Antifibrinolytics
- Antifoaming agent
- Antifolates
- Antifouling
- Antifouling agent
- Antifreeze proteins
- Antifungal
- Antifungal agents
- Antifungal medication
- Antifungal protein
- Antifungal resistance
- Antifungals
- Antiganglioside antibodies
- Antigen antibody reactions
- Antigen presentation
- Antigen presenting cells
- Antigen processing
- Antigen recognition
- Antigen retrieval
- Antigen-presenting cells
- Antigenic drift
- Antigenic shift
- Antigenic variation
- Antigenicity
- Antigens
- Antiglomerular basement membrane disease
- Antiglucocorticoid
- Antigonadotropic
- Antigonadotropin
- Antihelix
- Antihistamines
- Antihyperlipidemic
- Antihypertensive
- Antihypertensive agents
- Antihypertensive and Lipid Lowering Treatment to Prevent Heart Attack Trial
- Antihypertensive drugs
- Antihypertensive therapy
- Antileukotriene agents
- Antimalarial agent
- Antimalarials
- Antimetabolites
- Antimicrobial activity
- Antimicrobial agent
- Antimicrobial chemotherapy
- Antimicrobial drugs
- Antimicrobial peptides
- Antimicrobial resistance
- Antimicrobial spectrum
- Antimicrobial stewardship
- Antimicrobial therapy
- Antimicrotubule agent
- Antimigraine
- Antimigraine agents
- Antimigraine drug
- Antimitotic agent
- Antimonate
- Antimonial
- Antimony
- Antimony potassium tartrate
- Antimony trichloride
- Antimony trioxide
- Antimuscarinic
- Antimutagens
- Antimycin
- Antimycin A
- Antimycobacterial
- Antineoplastic antibiotic
- Antineoplastic drugs
- Antinociception
- Antinuclear antibody
- Antiobesity agent
- Antioxidant activity
- Antioxidant capacity
- Antioxidants
- Antipain
- Antiparasitic agent
- Antiparasitic agents
- Antiparkinson
- Antiparkinsonian
- Antiphospholipid antibody syndrome
- Antiphospholipid syndrome
- Antiplasmin
- Antiplatelet
- Antiplatelet drugs
- Antiporters
- Antiprotozoal agents
- Antipruritics
- Antipsychotics
- Antipyretics
- Antiretroviral drugs
- Antiretroviral therapy
- Antirheumatic agents
- Antisaccade
- Antisaccade task
- Antiseizure medication
- Antisense
- Antisense RNA
- Antisense oligodeoxynucleotide