根尖

外源DNA导入烤烟后D1代植株根尖细胞有丝分裂的细胞学观察

Cytological observation of cell mitochysis in root tip of d 1 generation after exogenous DNA introduced into fluecured tobacco

表明这三种农药达到一定剂量后会对蚕豆根尖细胞的DNA造成遗传损伤。

These three pesticides with a certain concentration had significant effects on cytogenetical toxicity of Vicia faba root tip cells .

前列腺素E2和血栓素B2在根尖周炎中的定量研究

Quantitive study of prostaglandin E - 2 and thromboxane B_2 in periapical periodontitis

以小麦根尖分生组织细胞核及染色体制备高分子量DNA

High Molecular Weight DNA Preparation from Nuclei or Chromosomes of Root Meristem of Wheat

C组：慢性根尖周炎54个牙162个根管。

Group C ( 162 root canals from 54 molars ) which was undergoing chronic apical periodontitis .

AC至解剖根尖的平均距离为0.61mm。

The mean distance between the AC and anatomic apex was 0.61 mm .

根系伸长区内Al含量明显低于根尖对照；

Al contents in the extension zone of roots were lower obviously than those in root tips .

~（60）Coγ射线辐照对小麦种子根尖细胞有丝分裂的影响

Effects of ~ ( 60 ) Co γ ray irradiation after mitosis on root tip cells in wheat seeds

Nd∶YAG激光对牙体根尖封闭效应的初步研究

Preliminary Observation on the Tooth Root Apex Sealing Effects of Nd ∶ YAG Laser Irradiation

微波与e钴γ射线复合处理对小麦根尖细胞遗传学效应的影响

Cytogenetic effect of Combine treatment of microwave and ~ ( 60 ) Co gamma rays on root tip Cells of Wheat

结论CPC对根尖具有与传统根充材料相同的封闭作用。

Conclusion CPC produced identical apex sealing effect with traditional canal filling materials .

结果表明，软X射线同步辐射处理后，在水稻根尖细胞内可诱发各类染色体结构变异。根尖细胞的影响。

The results indicated that synchronous irradiation had a significant cytological effect . Variation on chromosome structure was observed in root tip cells .

目的探讨Nd∶YAG激光在牙髓病及根尖周病治疗方面的临床适用性。

Objective To explore the applicability of Nd ∶ YAG laser in the treatment of dental pulp disease and periapical disease .

结果表明：La主要沉积在番茄叶片和根尖的成熟区细胞的细胞壁、细胞膜，以及根尖细胞的细胞间隙。

And the results showed that : La deposited mainly on the cell wall , membrane and in the intercellular space .

蚕豆（Viciafaba）根尖微核试验敏感品种的筛选

Screening of sensitive breeds for micronucleus test in Vicia faba root tips

根尖孔大小对rootzx准确性影响的体外研究

In vitro evaluation of the correlation between the size of apical foramen and the accuracy of root ZX

预备后的根尖孔直径镍钛K锉组明显小于不锈钢K锉组（P<001）。

The prepared apical foramina diameters of nickel-titanium K file groups were much smaller than those of the stainless steel K file group ( P < 0.01 ) .

离根尖1厘米左右根段中泡囊出现百分率与VA菌根侵染率呈极显著或显著正相关。

The percentage of vesicle occuring is significantly correlated to the percentage of VA mycorrhizal colonization .

在重力场上水平放置的幼苗其根尖向高钙（Ca2＋）一侧弯曲生长；

The root tip grew towards the high calcium ( Ca 2 + ) side of horizontally seedlings in gravity field ;

新除草化合物WD对洋葱根尖细胞形态的影响

Effects of a new herbicide WD on cellular morphology of onion root tip

方法对角化囊肿、根尖囊肿、含牙囊肿上皮基底细胞和棘细胞及成釉细胞瘤外周柱状细胞和中央星网状细胞进行细胞核DNA含量测定，结合倍体和直方图分析。

Methods DNA contents and ploidy of basal and spinous cells in keratocyst , radicular cyst , dentigerous cyst , and the peripheral column cells and central reticular cells in ameloblastoma were analysis respectively .

结论rootzx根尖定位仪可以准确测定根管长度，从而明显提高侧向加压法根管充填质量。

Conclusion Root ZX apex locator can measure root canal length accurately and improve the quality of canal obturation with lateral compaction .

方法对RVG和传统根尖周片（CPR）进行比较，由四名医师进行评判。

Methods To compare RVG image with conventional periapical radiography ( CPR ) .

利用蚕豆（Viciafaba）根尖微核法监测工业废水污染的研究

Study on Utilization of Micronucleus Test in Vicia faba Root Tips to Detect the Industrial Wastewater Pollution

用不同浓度的NaCl处理旱稻种子，研究发芽情况和根尖细胞染色体行为。

We studied the germination and the chromosomal behavior of the root tip cells when upland rice seeds were treated with different NaCl solution density .

BIO-OSS促进根尖周刮治术后骨缺损修复的临床效果

Clinical observation of effect of BIO-OSS material to periodontal defect after periapical curettage

急性根尖炎约诊间根管渗出液中IL-1β、PGE2检测

The detection of interleukin-1 β and prostaglandin E_2 in periapical exudates of acute periapical periodontitis in the course of root canal treatment

结果：T组在3、7d时牙髓、根尖周炎症细胞浸润程度均较C组轻。

RESULTS : At the 3 d and 7 d period , the degree of inflammatory cell infiltration in T group were less than that in C group .

使用牙周临床检查、常规根尖片、前牙区CT来观察比较正畸治疗前后患牙的牙龈出血、探诊深度、牙槽骨高度和附着水平的变化。

Evaluation of changes of BI , PD , alveolar bone and attachment level were given before and after treatment by means of periodontal probe , periapical x ray film and CT scan of the involving teeth .

目的观察同种脱矿牙本质基质（DDM）用于根尖诱导成形术的临床效果。

Objective To study the clinical effects of demineralized dentin matrix ( DDM ) as a apexificating agent .