Dendrites go up, axons go down.
Strittmatter
S M
SM
D000818:Animals; D001369:Axons / Q000502:physiology*; D002540:Cerebral Cortex / Q000166:cytology; D006152:Cyclic GMP / Q000502:physiology; D003712:Dendrites / Q000502:physiology*; D006023:Glycoproteins / Q000502:physiology*; D051379:Mice; D009414:Nerve Growth Factors / Q000502:physiology*; D009419:Nerve Tissue Proteins / Q000502:physiology; D016501:Neurites / Q000502:physiology; D039942:Neuropilin-1; D017966:Pyramidal Cells / Q000502:physiology; D040121:Semaphorin-3A; D015398:Signal Transduction
D006023:Glycoproteins; D009414:Nerve Growth Factors; D009419:Nerve Tissue Proteins; D040121:Semaphorin-3A; D039942:Neuropilin-1; D006152:Cyclic GMP