mouse TS23
  embryo
  cavities and their linings
  limb
  mesenchyme
  vertebral axis muscle system
  organ system
  gland
  visceral organ
  nervous system
  central nervous system
  brain
  ganglion
  nerve
  spinal cord
  conus medullaris
  filum terminale
  floorplate
  lateral wall
  mantle layer:  06  07  08  09  10 
  alar columns
  basal columns
  intermediate grey horn
  marginal layer
  sulcus limitans
  ventricular layer
  meninges
  roof plate
  peripheral nervous system
  integumental system
  sensory organ
  cardiovascular system
  skeleton
  axial skeleton
  cervical region
  lumbar region
  nucleus pulposus
  sacral region
  thoracic region
  rib:  01  02  03  04  05  06  07  08  09  10  11 
  T1
  T2
  T3
  T4
  T5
  T6
  T7
  T8
  T9
  T10
  T11
  T12
  T13
  intervertebral disc
  vertebra
  cranium
  pectoral girdle and thoracic body wall
  pelvic girdle
  tail
  extraembryonic component