发育异常

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。

Tooth agenesis is a common tooth dysplasia.

先天缺牙是比较常见的牙齿发育异常疾病。

Arterial compliance may be affected by the retarded uterus growth through lowering the accumulation of elastin scleroprotein in the aorta wall, and the reduced arterial compliance perhaps causes adult's hypertension in the babies with low birth weight.

Martyn认为，可能的机制是，在宫内发育阶段，营养不良等因素影响了动脉壁弹力蛋白的发育异常，降低了动脉顺应性降低，从而导致了低出生体重儿童进入成年期后容易发生高血压。

These results suggest that ethanol be the major factor in dysfunction of brain development whereas acetaldehyde plays critical roles in other organ teratogenesis.

上述结果提示FAS中的脑发育异常是乙醇独立作用的结果，乙醛则引起FAS中的辅助畸形。关键词醇，乙乙醛胚胎发育胎儿酒精综合征联合作用

Hypohidrosis ectodermal dysplasia is a rare congenital disorder that results in abnormalities in the structures of ectodermal origin tissues, such as teeth, eccrine sweat glands, hair and nails.

少汗型外胚层发育不良症是一种罕见的起源于外胚层组织，如牙、汗腺、毛发等发育异常的遗传性疾病。

1Unequal number of univalents with decreased degree of synapsis and lagging chromosomes occurred in meiosis.The abnormal chromosomal behavior correlated with heterogenicity gave rise to unequal allocation of homogenous chromosomes to daughter cells and resulted in the deletion of functional chromosoms,thus led to the occurence of a certion proportion of aborted pollens.(2)The interaction between genetic imbalance and such environmental factors as temperature,etc.,further drew forth physiological and even structrural imbalance,with abnormal development of pollen mother cells and tapetal cells,and consequently resulted in no or very few production of pollens.The difference in the interaction between environment and genotype reflected on the unstability of pollen abortion in different years.

1在减数分裂中有数目不等的联合程度较差的单价体以及落后染色体出现，这种与异质性相关的染色体行为异常，导致同源染色体向子细胞的不均衡分配，造成具功能染色体的缺失，从而引起毛白杨一定比率的败育花粉的产生；(2)遗传上的不平衡与温度等环境因子相互作用，进一步引发毛白杨生理乃至结构上的不平衡，花粉母细胞和绒毡层细胞发育异常，从而造成不产粉或产粉较少；环境与基因型互作的差异性导致了花粉败育的年度不稳定性。

We believe that these lesions overlap histomorphologically with higher-grade dysplastic nevi and de novo intraepidermal epithelioid melanocytic dysplasia.

我们认为，这些病变与分级较高的发育异常痣和新生表皮内上皮样黑色素细胞发育不良存在着组织形态学的重叠。

Hemifacial microsomia is a congenital malformation resulting from the variable dysmorphogenesis of cranio-facial structures either derived from or intimately related to the first and second brachial arches.

半侧颜面发育不全是来源于第一、第二鳃弓或与之有密切联系的颅颌面组织结构在胚胎期出现发育异常，继而形成的受累广泛的先天性畸形。

The analysis shows that under heat stress, meiocytes degenerate while tetrad cell dispersion fails at microspore formation phase. During pollen maturation phase, loss of orientation of reproductive cells, abnormal vacuolization of tapetal cells, paramorphia or abortion of anther walls and pollens are observed under heat stress.

结果表明，受高温胁迫后，在小孢子形成阶段，水稻花粉母细胞发育异常、四分体无法适时分散；在花粉粒成熟阶段，水稻生殖细胞失去正确的排列方向、绒毡层细胞发生非正常分解、花药壁和花粉粒发生形态异常并出现败育。

The suspensors of some suf3 seeds are short and abnormal curvature in 8-cells period.

而在稍后的发育时期中，我们在suf3中观察到了退化的胚胎，很可能是由胚柄发育异常所造成的。

But we don't care about Battlegrounds.

但我们并不在乎沙场中的显露。

Ah! don't mention it, the butcher's shop is a horror.

啊！不用提了。提到肉，真是糟透了。