Biological features and physical concepts of pattern formation exemplified by hydra.
D000818:Animals; D002449:Cell Aggregation; D002454:Cell Differentiation; D002465:Cell Movement; D003201:Computers; D006829:Hydra / Q000033:anatomy & histology / Q000502:physiology*; D007700:Kinetics; D008954:Models, Biological; D008958:Models, Molecular; D009024:Morphogenesis; D009474:Neurons / Q000166:cytology / Q000502:physiology; D012038:Regeneration; D014182:Transplantation, Autologous