发育异常

Based on the comparison of oil-rich and gas-rich sag s in the Bohai Bay basin,two main controlling factors of gas reservoir-forming are summarized: gas-rich sag s have source rock of partial humic or high maturation sapropel type;thick abnormal pressure mudstone in lower Tertiary is the cap,or "quilt".

对比研究渤海海域及周边陆地油区主要气田特征，发现渤海海域天然气成藏的主控因素有两点：存在相对富气凹陷，气源岩为偏腐殖型或高成熟腐泥型；富气凹陷的古近系发育高压异常厚层泥岩封盖层。

AIM: Growth factors at certain concentration in body are essential for the normal development of eyeball; either less or more can result in scleral abnormity.

目的：研究表明，体内一定浓度的生长因子是保证眼球正常发育的必要条件，过少或过量都会引起巩膜的异常改变。

The abnormality appeared in sporogenic stage and later followed vacuoles and enlarged taptum.

在小孢子发育过程中，绒毡层细胞出现液泡化、肥大、增生等异常现象。

The results shows that the tapetal expanding abnormally occurs in dyadphase stage, microspore abortion occurs in the early of monokaryon stage, disaggregation in the end of monokaryon stage, only some spall of microspore is observed in monokaryon stage, the four cell walls also exist, the tapetal cells became completely vacuolated, almost filled the whole locule. vascular bundle of male sterile line anther vanish at mature pollen stage.

结果发现花药绒粘层在二分体时期发生异常，小孢子在单核前期开始败育，至单核后期完全解体，花药发育后期不育系药腔中只观察到少量的小孢子残体，花药壁的四层细胞依然存在，绒粘层细胞已经彻底液泡化，占据了药腔的整个空间，花粉成熟期不育系花药维管束消失。

Diagnosis/testing. A diagnosis of ocular albinism is probable in the presence of congenital nystagmus, iris translucency, and significant hypopigmentation of the ocular fundus periphery in males with normal skin pigmentation and foveal hypoplasia, reduced visual acuity, and aberrant optic pathway projection, as demonstrated by crossed asymmetry of the cortical responses on visual evoked potential. X-linked inheritance is documented by either a family history consistent with X-linked inheritance or the presence of typical carrier signs (irregular retinal pigmentation and partial iris transillumination) in an obligate carrier female.

诊断/检测。对于皮肤色素沉着正常、中央凹发育不全、视敏度降低以及视径投射异常（VEP，表现为视觉诱发电位中皮层反应的交叉不对称）的男性患者，当存在先天眼球震颤、虹膜半透明以及显著的眼基底层边缘色素减退的症状时，可被疑似诊断为眼白化病。X连锁性遗传则以存在与X连锁遗传一致的家族病史，或在一个应当为携带者的女性中存在典型的携带者迹象（视网膜色素沉着不规则以及部分虹膜透射）而被确认。

According to the development characteristics of regional caprocks,great efforts have been made to analyse the effect of it on oil and gas accumulation and preservation in different aspects. We consider regional caprocks to be the good barriers to prevent oil and gas in free phase from escaping. If uncompacted and possessing abnormal pore fluid pressure,regional caprocks are the barriers to prevent oil and gas in water dissolving phase from escaping.

根据区域性盖层的发育特征，从不同侧面对其在油气聚集与保存中所起的作用进行了深入分析，认为区域性盖层通常是阻止游离相油气逸散的良好区域物性屏障；如果其欠压实，具异常孔隙流体压力，它还可以成为阻止水溶相油气逸散的区域压力屏障；如果其再具生烃能力，还可以成为阻止扩散相天然气逸散的区域浓度屏障。

Boys born with undescended testicles are 60 percent more likely than other boys to be infertile when they grow up. Furthermore, the researchers beliee that poor testicular deelopment in the uterus may lead to later fertility problems een in boys who don't show the genital abnormality at birth.

伴有阴睾的男孩长大后比其他男性多60%可能性患不育症，还发现，在母体子宫内双侧睾丸发育不良的男性会导致长大后不育，即使他们出生时无外生殖器异常。

These abnormal cells became dramatically vacuolated and hereafter disintegrated completely at later stage.

这类异常的小孢子母细胞在随后的发育中逐渐液泡化并最终解体。

For further studying the genetic mechanism of the reproductive isolation phenomenon of interspecific hybrid, paraffin sections of testes from 13 sexually mature male mules (Equus asinus×Equus caballus) and 12 hinnies (Equus caballus×Equus asinus) were prepared, and the samples of Giemsa meiosis and AgNO 3 synaptonemal complexes were observed and compared with spermatocyte meiosis of horse and donkey under light microscope and electronic microscope.

为了进一步探讨种间杂种生殖隔离现象的遗传机理，本研究采用性成熟公骡的睾丸为材料，制备组织切片和减数分裂联会复合体标本进行观察，发现个别性腺发育较好的个体虽然减数分裂存在大量异常，但确有少数精母细胞完成了减数分裂并产生精子。

It is known that one of the important mechanisms for epigenetic reprogramming is DNA methylation.

目前的研究认为这些异常是由于体细胞核在去核卵母细胞中重编程错误造成的，导致克隆牛胚胎的发育潜能降低。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。