查询词典 placental mammals

The regulatory elements of the tetracycline resistance operon of Eschenchia coli, Tet repressor and Tet operator, have served as the basis for the establishment of heterologous repression-based inducible system in many eukaryotes including yeast, plants, insects, mammals and parasitic protozoa, such as Trypanosomes, Entamoeba, Giardia, Toxoplasma, Leishmania and Trichomonas.

基于四环素抑制子(Tetracycline Repressor，TetR)和四环素操纵子(Tet Operator，TetO)相互作用的四环素可诱导转基因表达系统，已经广泛的应用于很多真核生物，包括酵母、植物、昆虫、哺乳类细胞和诸如锥虫、阿米巴、贾第虫、弓形虫、利什曼和毛滴虫的寄生原虫。

An enzootic system between mosquitoes and birds maintains and amplifies West Nile virus; mammals, including horses and humans, are incidental "dead-end" hosts.

蚊与鸟之间的地方疫源性保持并孕育着西尼罗河病毒。哺乳动物，包括马和人类，都是易感的终宿主。

Any of several plain-colored equine mammals of Asia and northeast Africa.

亚洲和非洲东北部的几种颜色纯净的马科哺乳动物。

The natural form of LIF is a 38 to 67 kDa glycosylatedprotein widely expressed in both adult and embryonic eutherian mammals .

LIF的天然形式是38-67kDa的糖基化蛋白，在哺乳动物的成年个体和胚胎中广泛表达。

Imprinted genes are only expressed from one parental allele in eutherian mammals.

哺乳动物印记基因是指只表达亲本一方的遗传信息，而另一方处于关闭状态的一类基因。

Assignment of SRY as the testis-determining factor in eutherian mammals is supported by molecular analysis of cytogenetic sex reversal (i.e., XX males and XY females) and by complementary studies of transgenic murine models.

Sry转基因小鼠的产生和对包括XX男性及XY女性等多种性分化及发育异常患者的研究，都支持SRY基因是TDF基因及其在性别决定中的开关控制作用。

The principal mass-independent cause for variation in the basal rate of eutherian mammals is that high rates of energy expenditure, when ecologically feasible, facilitate high reproductive outputs, whereas some habits and environments require low energy expenditures, which lead to low rates of reproduction.

除体重因素外，导致真兽类基础代谢率变异的主要原因是：当生态因素适合时，高水平的能量消耗可以促进动物的高繁殖输出，而动物的某些习性和生存环境则会要求低能量消耗，从而使繁殖率降低。

In Vertebrate, mtDNA is generally a 15-22 kb circular genome. mtDNA is arranged in the same relative order in almost all vertebrate species from teleost fishes to eutherian mammals.

脊椎动物线粒体DNA是一个长度约为15-22kb环形结构。mtDNA呈母系遗传，在大部分的脊椎动物中具有相对保守性。

The common features of imprinted genes are, clustering of multiple imprinted genes in one chromosomal region (around 80%), conservation of imprinting among eutherian mammals, asynchrony of DNA replication of imprinted genes, temporal and spatial regulation of expression of imprinted genes, coding for untranslated RNAs as well as proteins, antisense transcripts may regulate expression of imprinted genes. Once established, the imprinting pattern is stably transmitted through cell division but reset in germ cells of the fetal gonads.

约80%的印记基因呈串出现在染色体上；在哺乳动物品种之间，印记基因具有较高的保守性；印记基因的复制通常表现为不同时性；一些印记基因具有印记遗传的时空性；少数印记基因只转录为mRNA而不翻译成蛋白质；印记基因的反意链通常表达，表达产生具有调节印记基因的作用。

In eutherian mammals, XCI is thought to be triggered by the expression of the non-coding Xist RNA from the future inactive X chromosome3, 4, 5; Xist RNA in turn is proposed to recruit protein complexes that bring about heterochromatinization of the Xi6, 7. Here we test whether imprinted XCI, which results in preferential inactivation of the paternal X chromosome, occurs in mouse embryos inheriting an Xp lacking Xist.

在最新一项研究中，美国北卡罗琳娜大学研究人员用小鼠胚胎（研究人员用基因工程方法使这些小鼠在其未来失活的X-染色体上含有一个有缺陷的Xist基因）所做的新的研究工作显示，实际情况更为复杂。

Add it into your food such as to yogurt, cottage cheese and such.

你可以把它加入到像酸奶、奶酪一类的食物中一起进食。

The man was rescued about three hours later when his partner arrived home, SAPA said.

SAPA说，这为男子在三个小时后妻子回家后被解救