具有脊索的
2.any animal lacking a backbone or notochord; the term is not used as a scientific classification.
3.Chordomas are rare tumors of notochordal tissue remnants and most frequently affect the sacrum and skull base.
4.Does the degree of biochemical protection notochord cells proide explain the difference in susceptibility to degeneratie disc disease between canines and humans?
5.Objective To investigate the diagnostic features of CT and MRI in chordoma of the skull base(CSB) and to estimate their value of clinical application.
6.The eolutionary precursor to the backbone, the notochord is a fine, flexible chord defining the body axis in the early embryos of all ertebrates.
7.Conclusion The extremely high T 2WI signal intensity is the characteristic of MRI finding in CSB and has great differential value for the tumors of the skull base.
8.A similar structure in embryos of higher vertebrates, from which the spinal column develops.
9.A flexible rodlike structure that forms the main support of the body in the lowest chordates, such as the lancelet; a primitive backbone.
