title: Subsystems which process information. Input transducer. Receiving information from the environment.
mesh_terms: D002449:Cell Aggregation; D002999:Clone Cells; D003001:Cloning, Molecular; D004247:DNA; D006801:Humans; D008465:Mechanoreceptors; D012160:Retina / Q000166:cytology; D014161:Transduction, Genetic
chemical_list: D004247:DNA