斑马鱼

Joint toxicities of binary mixtures and ternary mixtures of acetochlor and heavy metalsto photobacterium phosphoreum and zebrafishembryos at different proportions(toxic unit ratios of 1∶1,1∶4,4∶1 and 1∶1∶1)were studied.

研究了乙草胺与Cu，Zn(以毒性单位配比为1∶1，1∶4和4∶1以及1∶1∶1构成的二元或三元混合体系)对发光菌和斑马鱼胚胎的联合毒性，采用相加指数法对联合毒性效应进行评价。

Keywords acetochlor;heavy metals;joint toxicity;photobacterium phosphoreum;zebrafish embryos.

乙草胺；重金属；联合毒性；发光菌；斑马鱼胚胎。

Because of high reproductivity andtransparent embryos, zebrafish becomes the best vertebrate for mutagenesis.

由于具有产卵量大，胚胎透明易于观察等优点，斑马鱼成为脊椎动物中最好的诱变材料。

During somitogenesis, zebrafish FoxD3 is known of maintaining the somitic expression of myf5, and subsequently regulates myogenesis. FoxD5, another gene of the FoxD family, is also expressed in forming somites of the anterior PSM. However, the regulatory function of FoxD5 in somitogenesis is not clear.

虽然已知斑马鱼中FoxD3在体节发育时，能维持myf5在体节的表现并藉此参与於肌肉的发育；但FoxD转录因子家族中的另一员，FoxD5，在体节发育时也会表现在presomitic mesoderm前端生成中的体节处，而这个FoxD转录因子是否在体节发育的过程中扮演调控的角色目前仍不清楚。

Present results also suggested that zebrafish as a quality model for study on vasculogenesis and angiogenesis during embryonic development and screening for angiogenic enhancer or inhibitors.

斑马鱼是研究胚胎发育早期微血管发生和血管发生的极佳动物模型，可用于促血管发生或抑制血管发生药物筛选。

Recently, rat, zebrafish, and Xenopus have been added, and we anticipate arraying cDNA libraries from additional species over time.

近来大鼠，斑马鱼和非洲有爪水生蛙的研究陆续加入，我们预期排列新加入研究物种的互补脱氧核糖核酸数据库也会陆续产生。

Strong expression of nanosl mRNA can be observed in oogonia and stage Ⅰ、Ⅱ oocytes but the signal became weaker in later stage oocytes.

在斑马鱼精子发生中，nanoslmRNA可在精原细胞和初级精母细胞中检测到。

Strong expression of nanos 1 mRNA was detected in spermatogonia and relatively weaker signal was found in primary spermatocytes but no nanos 1 mRNA expression was observed in spermatids. The results suggested that nanos 1 may play an important role in maintenance and functioning of the germline stem cell—oogonia and spermatogonia.

在斑马鱼精子发生中， nanos1 mRNA可在精原细胞和初级精母细胞中检测到。nanos1 mRNA的阳性信号在精原细胞中极为强烈，在初级精母细胞中较为微弱，而精子细胞中没有阳性信号。

The results were as follows: nanos 1 mRNA uniformly dispersed throughout the cytoplasm of oocytes at all stages. Strong expression of nanos1 mRNA was observed in oogonia and stageⅠ、Ⅱ oocytes, but the signal became weaker in later stage oocytes.

结果表明：在斑马鱼卵子发生中，nanos1 mRNA均匀分布于卵原细胞和各时期卵母细胞的胞质中；在卵原细胞和Ⅰ、Ⅱ期卵母细胞中，nanos1 mRNA的杂交信号十分强烈，而较晚期卵母细胞中信号明显减弱。

Zebrafish applied in the screening of tumor antiangiogenesis drug and the mechanism of tumor angiogenesis are summered.

就斑马鱼在抗肿瘤血管生成药物筛选及其在肿瘤血管生成机制方面研究的应用作一综述。

Cynanchum Lingtai apricot production in the average weight 65 grams, the brightly-colored fruit, juicy rich, sweet-sour taste, sweet from the nucleolus, when the late Qing Dynasty famous Shaanxi, Gansu provinces, the Qing imperial court Tongzhi tribute for years.

灵台生产的牛心杏平均单果重65克，果实色泽鲜艳，汁多味浓，甜酸适口，离核仁甜，清末时就驰名陕、甘两省，清同治年间曾为朝廷贡品。

Chenopodium album,Solanum nigrum, and Amaranthus retroflexus were very susceptible to the herbicides. Polygonum persicaria and Abutilon theophrasti were relatively less susceptible to the herbicides, and Lycopersicon esculentum was not susceptible to it. The relationship between reduction rates of weed biomass and PPM values of weed leaves 2,4, and 6 days after treatment was established.

供试的6种杂草对该混剂的敏感性存在显著差异：红心藜Chenopodium album、龙葵Solanum nigrum和反枝苋Amaranthus retroflexus对该混剂最敏感，ED90值分别为47.65、71.67和29.17g/hm2；春蓼Polygonum persicaria和苘麻Abutilon theophrasti敏感，ED90值分别为96.91、114.20g/hm2；而番茄不敏感。