形态异常

For investigation of genetic mechanisms of leaf polarity formation, we screened for Arabidopsis mutants with aber...

通过EMS化学诱变，寻找到一些形态相似，叶发育异常的突变体，遗传实验证明这些突变体可以被分成两类。

Furthermore, abnormal morphology, shrinkage and reduced density of dendritic spines and defects in LTP were observed in brains of the patients suffering from mental retardation and neurodegenerative diseases; many mutant genes found from these patients encode component proteins of signal transduction for neuronal plasticity. These studies on synaptic plasticity would certainly promote making the effective prevention and treatment procedures for mental and neurodegenerative diseases.

此外，在精神迟滞性疾病和神经退行性疾病患者脑内记录到异常的LTP，并发现神经元的树突棘数量减少，形态上产生畸变或萎缩，同时发现，产生突变的基因大多编码调节突触可塑性的信号通路蛋白，故突触可塑性研究也将促进精神和神经疾病的预防和治疗。

The top of neural tube forms basic encenphalic shape,namely endbrain, interbrain, midbrain and afterbrain. The abnormal closure of neural tube will result in neural tube detects. Encephalocoele is a common congenital malformation whose mechanism was no known. NO participates in the physiologic process of brain.

胚胎脑发育的早期阶段主要是神经板隆起、弯曲、闭合形成神经管，神经管的头部从前向后依次发育形成脑的基本组织形态，即端脑、间脑、中脑、后脑，在神经管闭合过程中出现异常就会导致NTD。

Abstract］ objective to study the pathological features and histopathological type and differential diagnosis of hepatic focal nodular hyperplasia.methods the clinicopathological characteristics of 40 cases of fnh were studied.all were evaluted by use of paraffin embedded sections and he staining before light microcope observation.results there were 28 females and 12 males fnh patients whose age were from 16 to 62 years（median 41.3）,all alpha-fetoprotein was negative and had no hepatitis history.25 cases were classic type showed characteristic central stellate fibrotic scar,composed of fibrous connestive tissue and tortuous blood vessels.8 cases were telangiectic type,the left were mixed type and adenomatoid type.conclusion fnh is a reactive proliferation of hepatic cells to local blood vessel anomalies,it is not realy a tumor.its differential diagnosis includes hepatic adenomatous hyperplasia nodule,hepatic anaplasia nodular hyperplasia,fibrolamellar hepatocellular carcinoma and hepatocellular adenoma.

目的 探讨肝局灶性结节性增生的病理形态特点、组织分型及鉴别诊断。方法分析40例肝局灶性结节性增生的临床资料，并采用石蜡包埋he染色光镜下观察其组织学特点。结果 40例肝局灶性结节性增生患者中，女28例，男12例，年龄18~62岁，平均年龄41.3岁，所有病例术前均无肝炎病史，甲胎蛋白阴性，组织学上25例为经典型，有特征性的中央纤维瘢痕，由纤维结缔组织及扭曲血管组成。8例为毛细血管扩张型，其余为混合型及腺瘤样增生型。结论肝结节性增生是一种肝细胞对局部血管的异常反应性增生，并非真性肿瘤，主要与肝腺瘤样增生性结节、肝间变性结节状增生、肝纤维板层癌及肝细胞腺瘤鉴别。

The rats were tested for rotational behavior induced by apomorphine for 40 min every week.

用小动脉旋转行为监测仪记录Apomorphine诱发的大鼠异常旋转行为、脑组织液生化和组织形态的变化。

Based on the theory of Core-Core dispersion,the apparent amplitude frequency was computed using the complex resistivity on elliptical sphere with central gradient array.

基于柯尔-柯尔频散理论，采用中间梯度上椭球体的复电阻率计算相应的幅频率，讨论椭球体的充电率、中心埋深和长轴倾角对幅频率异常和曲线形态的影响；研究幅频率资料的反演算法。

Aberrant filtering bleb morphology also may be cystic and avascular as well as prone to spontaneous leakage.

异常的滤泡形态除了有自发泄漏倾向外，也可能会出现囊状及无血管。

The purpose of this study was to evaluate whether the morphology of the midfacial complex and mandible differed in normal occlusion and Angle Class II, division 1 malocclusion children, and to localize differences with finite-element method and thin-plate spline analysis.

本研究的目的，在评估混合齿列时期，二级异常咬合儿童与正常咬合儿童间，中脸部复合体和下颚骨的形态是否有所差异。使用传统测颅分析法合并几何形态学分析（有限元素分析法、薄板仿样分析法），对其中形态间的变化及其发生机制将有更深入的认识，并能提供临床医师作为早期诊断和治疗的参考。

To observe the abnormal morphs of the trophozoite of Giardia lamblia in vitro axcenical cultivation. G. lamblia trophozoites were cultivated axenically in modified TYI-S-33 medium. Sediments, which contain the trophozoites, on the bottom of the culture tubes were collected at different time after inoculations.

目的 观察体外纯培养的蓝氏贾第鞭毛虫滋养体的异常形态，方法用改良TYI-S-33培养基培养贾第虫，在接种后不同时间取培养管底部虫体涂片，Giemsa's染色，在显微镜下观察虫体形态并照相。

However,the normal controls seldom showed metaphase multipolar mitoses and centrosome amplification,with the average frequencies of（0.8±0.9）%and（1.2±1.4）%separately.

而正常对照组细胞仅偶尔出现异常分裂中期形态及异常的中心体数目，其平均值分别（0.8±0.9）%和（1.2±1.4）%。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。