生殖

In previous reasearches,importance was attached to the damage of skeletal tissue induced by fluorine.But with fluoride's extensive application,recent researches pay more attentions to non-skeletal toxicity of fluorine,especially to male reproductive toxicity of fluorine.

近年来，随着氟及其化合物的广泛应用，使得人们越来越多地暴露于高氟环境中，过量的氟对机体非骨相组织的损害，特别是对生殖系统的损害作用，日益受到人们的重视。

Gamma-aminobutyric acid, a four-carbon nonprotein amino acid, serves as a major inhibitory neurotransmitter in mammalian nervous systems. GABA has several physiological functions such as hypotensive activity, treatment of epilepsy, tranquilizing and allaying excitement, enhancing memory, controlling asthma, regulating hormone secretion, promoting reproduction and activating liver and kidney function.

氨基丁酸(γ-aminobutyric acid，简称为GABA)是一种天然存在的非蛋白质氨基酸，为哺乳动物中枢神经系统中重要的抑制性神经递质，具有降血压、治疗癫痫、镇静安神、增强记忆、控制哮喘、调节激素分泌、促进生殖、活化肝肾等多种生理功能，其制备和应用广受人们的关注与重视。

The experiment marks the first time that any nonreproductive human tissue has been transformed into gametes .

这次试验标志着第一次将人类的非生殖组织转变为配子。

"In this study, antepartum dental radiography in pregnant women was associated with an increased risk for a LBW infant, especially a TLBW infant," the authors write."Since women may not always be aware of their pregnancy status, it may not be possible to eliminate all dental radiography during pregnancy, but if this goal could be achieved and if the identified association is causal, the prevalence of TLBW infants could be reduced by up to 5%.... The notion that very low-dose radiation exposures to nonreproductive organs in expectant mothers are safe needs to be investigated further."

研究人员表示，在这项研究中，怀孕期妇女分娩前牙科X光摄影与LBW新生儿的风险增加联结在一起，特别是TLBW，由於妇女不能总是注意到她们的妊娠状态，也不可能在怀孕期间取消所有的牙科X光摄影，但如杲这个目标能达成，而且被识别的联想是偶然的，则TWBL新生儿的盛行率能依5%减少；此外，在妊娠妇女中，对非生殖器官极低剂量辐射曝露，是须进一步研究的安全需求概念。

The results were following: There were significant differences in aggression, defensive behavior and amicable behavior but not in investigating behavior, reproductive behavior and nonsocial behavior.

实验结果显示：在攻击、防御和善待方面发生了显著性变化，而在探究、生殖和非社会行为等方面没有显著性差异。

The results were following: There were significant differences not only in visiting duration but also in aggression, defensive behavior, investigating behavior, amicable behavior, reproductive behavior and nonsocial behavior.

实验结果显示：不仅在雄鼠访问时间上有显著差异，还表现在攻击、防御、探究、善待、生殖和非社会行为等方面都发生了显著性的变化。

It includes the process whereby a diploid cell of the nucellus develops into an embryo giving a diploid seed with a genetic constitution identical to the parent.

在另一种无融合生殖中，种子从未受精的配子中发育而来，这被称为孤雌生殖。

There were two or more nucleole in the nuclei of the apicalmeristem cell when the plant went into reproductive phase from vegetative phase.

植株由营养生长转入生殖生长时，茎端细胞的核内有2个或多个核仁。

Comparation of levels of the estrogen receptorβ in mainreproductive organ between the XO female individuals and the XX female individuals:Taking healthy mature female mandarin voles which are not in oestrum asexperimental animals, and they were measured with immuno-histochemical mehod.Experimental results indicated: the positive reaction of ERβin XO female individualsovaries was stronger than those in XX female individuals.

两者的黄体和各级卵泡的数量没有显著差异3、雌激素受体β在棕色田鼠XO雌体和XX雌体主要生殖器官内分布水平的比较：选取健康、性成熟、处于发情间期的雌性个体作为实验鼠，采用SABC法进行免疫细胞化学反应。

We hope that the results could offer reasons for studies of biology of development, genetics and physiology of nutrition in the ontogenetic periods of Coelomactra antiquata and for breeding parents with highquality, regulation of procreation and prevention of damage by disease in "863"project:《Cosmically cultivation of Coelomactra antiquata》.The results showed as below: Distribution and activities of different isozymes in different tissues were differential and relative to their functions.

通过本文的研究，希望可以为更加深入地进行西施舌的发育生物学、遗传学以及幼体发育变态过程中的营养生理学研究提供有价值的参数，同时也为国家"863"计划《西施舌的大规模人工育苗》中优质亲贝培育、生殖调控技术及病害预防等问题提供一定的理论依据。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。