09100 Metabolism

 09120 Genetic Information Processing

 09130 Environmental Information Processing

 09140 Cellular Processes

 09150 Organismal Systems

   09151 Immune system

   09152 Endocrine system

   09153 Circulatory system

   09154 Digestive system

   09155 Excretory system

   09156 Nervous system

     04724 Glutamatergic synapse [PATH:hsa04724]

     04727 GABAergic synapse [PATH:hsa04727]

     04725 Cholinergic synapse [PATH:hsa04725]

     04728 Dopaminergic synapse [PATH:hsa04728]

     04726 Serotonergic synapse [PATH:hsa04726]

     04720 Long-term potentiation [PATH:hsa04720]

     04730 Long-term depression [PATH:hsa04730]

     04723 Retrograde endocannabinoid signaling [PATH:hsa04723]

     04721 Synaptic vesicle cycle [PATH:hsa04721]

     04722 Neurotrophin signaling pathway [PATH:hsa04722]

   09157 Sensory system

   09158 Development and regeneration

   09149 Aging

   09159 Environmental adaptation

 09160 Human Diseases

 09180 Brite Hierarchies

 09190 Not Included in Pathway or Brite