China 
Africa 
- Autocrine
- Autocrine motility factor
- Autocrine signaling
- Autocrine signalling
- Autodock
- Autoeczematization
- Autofluorescence
- Autogenic training
- Autografts
- Autoimmune
- Autoimmune diseases
- Autoimmune encephalitis
- Autoimmune enteropathy
- Autoimmune hemolytic anemia
- Autoimmune hepatitis
- Autoimmune hypophysitis
- Autoimmune inner ear disease
- Autoimmune lymphoproliferative syndrome
- Autoimmune neutropenia
- Autoimmune oophoritis
- Autoimmune optic neuropathy
- Autoimmune pancreatitis
- Autoimmune polyendocrine syndrome
- Autoimmune polyendocrine syndrome type 1
- Autoimmune polyendocrine syndrome type 2
- Autoimmune polyendocrinopathy candidiasis ectodermal dystrophy
- Autoimmune progesterone dermatitis
- Autoimmune regulator
- Autoimmune thyroiditis
- Autoimmunity
- Autoinducer-2
- Autoinducers
- Autoinduction
- Autoinflammatory
- Autoinflammatory disease
- Autoinflammatory diseases
- Autoinflammatory syndrome
- Autoinflammatory syndromes
- Autoinflation
- Autoinhibition
- Autoinjector
- Autoinoculation
- Autointoxication
- Autologous
- Autologous blood injection
- Autologous chondrocyte implantation
- Autologous conditioned serum
- Autologous hematopoietic stem cell transplantation
- Autologous matrix-induced chondrogenesis
- Autologous stem cell transplantation
- Autologous transplantation
- Autologous tumor cell
- Autolysin
- Autolysis
- Autolysosome
- Automated analyser
- Automated lamellar keratoplasty
- Automated patch clamp
- Automatic behavior
- Automatic negative thoughts
- Automaticity
- Automation bias
- Automatism
- Automatisms
- Autonoetic consciousness
- Autonomic dysfunction
- Autonomic dysreflexia
- Autonomic function
- Autonomic ganglia
- Autonomic nerves
- Autonomic nervous system
- Autonomic neuropathy
- Autonomously replicating sequences
- Autonomy
- Autophagic vacuolar myopathy
- Autophagosome
- Autophagosomes
- Autophagy
- Autophony
- Autophosphorylation
- Autopoiesis
- Autoradiography
- Autoreceptors
- Autorefractor
- Autoregulation
- Autosampler
- Autoscopy
- Autosomal dominant
- Autosomal dominant disorder
- Autosomal dominant disorders
- Autosomal dominant inheritance
- Autosomal dominant nocturnal frontal lobe epilepsy
- Autosomal dominant polycystic kidney
- Autosomal dominant polycystic kidney disease
- Autosomal recessive disorder
- Autosomal recessive gene
- Autosomal recessive inheritance
- Autosomal recessive polycystic kidney disease
- Autosomal recessive spastic ataxia of Charlevoix-Saguenay
- Autosomal trisomies
- Autosomes
- Autostereoscopic display
- Autosuggestion
- Autotaxin
- Autotelic
- Autotopagnosia
- Autotransfusion
- Autotransplantation
- Autotrophs
- Autotrophy
- Auxin
- Auxology
- Auxotrophs
- Auxotrophy
- Avacopan
- Availability cascade
- Availability heuristic
- Avalanche photodiode
- Avanafil
- Avapritinib
- Avascular necrosis
- Avelumab
- Avena sativa
- Avenin
- Average
- Average Wholesale Price
- Avermectin
- Aversion
- Aversion therapy
- Aversive agent
- Aversives
- Avian infectious bronchitis
- Avian infectious bronchitis virus
- Avian influenza
- Avian influenza virus
- Avian leukosis
- Avian leukosis virus
- Avian malaria
- Avian metapneumovirus
- Avian myeloblastosis virus
- Avian paramyxovirus
- Aviation medicine
- Avibactam
- Avibirnavirus
- Avicularin
- Avidin
- Avidity
- Avitaminosis
- Avizo
- Avobenzone