| 1. | Chordomas are rare malignant neoplasms
摘要脊索瘤是极少见的恶性肿瘤。 |
| 2. | Besides , the treatment of chordomas remains a challenge
脊索瘤之治疗仍是一个很大的挑战。 |
| 3. | Most chordomas are found at skull base , sacrum and cervical spine
大多数脊索瘤发生在颅底、颈椎及荐骨。 |
| 4. | In certain breeds of dogs , notochord cells remain ibrant in the interertebral disc into adulthood
在一些犬类，直到成年，椎间盘内的脊索细胞仍活跃。 |
| 5. | Chordomas are rare tumors of notochordal tissue remnants and most frequently affect the sacrum and skull base
摘要脊索瘤是来自脊索遗迹的罕见肿瘤，主要侵犯荐椎及颅底。 |
| 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
脊索是脊椎进化的前体，脊索在所有的脊椎动物胚胎早期起到柔韧轴的作用。 |
| 7. | Discovery and study of novel genes related to chordoma helps to understand the molecular mechanisms better in the development of chordoma
在本研究中我们应用mrna差异显示、 rt - pcr和免疫组化技术对脊索瘤相关基因进行了研究。 |
| 8. | Chordoma , a frequent malignant tumor of bone , is usually adult epithelial tumors arising from embryonic notochord remains of the axial skeleton
脊索瘤是发生于神经轴中线并侵及邻近骨的脊索残留物，是脊柱肿瘤中最常见的一种。 |
| 9. | Does the degree of biochemical protection notochord cells proide explain the difference in susceptibility to degeneratie disc disease between canines and humans
是否脊索细胞的生物化学保护机制提供人和犬间在椎间盘变性易感方面的差别？ |
| 10. | Chordoma should be included in the differential diagnosis of a dumbbell - shaped mass involving upper cervical vertebrae in patients with long duration of symptoms
若病人在上颈椎呈现哑铃状肿块及患有长期症状时，脊索瘤应列入鉴别诊断中。 |
