vascular ray

The aerenchyma was made of broken cell of vascular ray in the roots.

根、茎、叶中均有发达的通气组织,根中的通气组织是维管射线细胞破裂形成的.

Method: Through a lot of fetal feet vascular blood infusion research and long-term x-ray analysis after operations, the tarsal bones were grouped and analyzed contrastively based on their morphology.

方法：本文通过大量胎足血管灌注研究及对大量手术后远期足部X线片进行分析，对骨骼形态进行了对比分析。

With the progressive development of stem, the activity of vascular cambium began. The fascicular cambium differentiated into secondary xylem and secondary phloem, while the interfascicular cambium only differentiated into wide ray of parenchyma tissue.

随着茎的继续发育，维管形成层开始活动，由束中形成层产生次生韧皮部和次生木质部分子；而束间形成层仅产生薄壁细胞组成宽的射线。

Methods 171 patients with suspected vascular lesions in the body were examined by MRA and compared with the results of X ray angiography ( XRA) or operation.

方法对171例可疑体部血管病变患者行MRA检查，并与X线血管造影（XRA）及手术结果比较。

Conclusion The upper gastrointestinal contrast X-ray study is a convenient and effective method for duodenal vascular compression syndrome. CT angiography is useful in some complicated cases.

结论对临床疑为十二指肠血管压迫综合征患者，上消化道钡餐造影是一种简单易行的诊断方法，如遇疑难病例则可考虑作CT血管造影等检查。