在其之后，第一个多细胞动物出现。
在生物界中，只有多细胞动物得癌症。偏偏沙鱼不得癌症。
Summary: In the animal world, many multicellular animals have cancer but sharks never get cancer.
激素印迹是单细胞动物和多细胞动物的一种生理现象，也是选择参与信号识别过程分子的工具。
Hormonal imprinting is a physiological phenomenon and a tool for selecting the molecules that participate in signal recognition processes at both the unicellular and multicellular level.
动物遗传学的学生研究多细胞动物的遗传学。他们通过实验，医学和兽医角度研究不同动物的遗传基因码。
Students in this major study the genetics of multicellular animals. They compare the genetic codes of different animals and approach the topic from experimental, medical, and veterinary perspectives.
比较基因学告诉我们钠通道和泵蛋白的演变进化是在多细胞动物崛起之前就发生了的。同时这也暗示说明点解平衡的控制在生命历程中是一个起着决定性作用的过程。
Comparative genomics shows that sodium channel and pump proteins evolved just before multicellular animals arose, implying that control of electrolyte balancing was a crucial event in life's history.
保存一小瓶细胞，该细胞可在无菌条件下再生，这要比保存小动物容易的多，对吗？
Much easier to keep a flask of cells under very sterile, very reproducible conditions than it is to keep a small animal, right?
研究的目的是要看这些植物多酚是否能够对抗动物如人的脂肪细胞。
The idea is to see if these plant polyphenols could be translated into fighting fat cells in animals, i.e. humans.
除了生育影响以外，对于动物的测试还发现，多溴二苯醚会影响脑部发育和甲状腺激素，而该激素控制细胞的生长发育及人体其他机能。
In addition to reproductive effects, animal tests have found that PBDEs can alter brain development and thyroid hormones, which regulate growth and development of cells and many key bodily functions.
这些生物不到1毫米长，是属于铠甲动物门的多细胞生物。从某些方面来看，它们与水母相似。
These creatures, which measure less than 1 millimeter long, are known as loriciferans. They somewhat resemble jellyfish sprouting from a conical shell.
什么样的遗传突变产生了多细胞的动物还不清楚。
What genetic change allowed multicellular animals to come into existence remains obscure.
本文以小鼠骨髓嗜多染红细胞微核率（PCEMNR）为指标，测定了抗病毒性肝炎新药紫红獐牙莱的提取物对哺乳动物遗传物质的诱变作用。
The micronuclei rate of polychromatic erythrocytes of mouse bone marrow (PCEMNR) was used as an index to study the effect of S. punicea Hemsl, a new anti-hepatitis drug, on genetic material of mammal.
特别在原生动物细胞内，有贮存、摄取、消化、排泄及清除多馀水分等功能。
Especially in protozoans, vacuoles perform functions such as storage, ingestion, digestion, excretion, and expulsion of excess water.
这些结构与已知的甲壳动物的光感受器相似。在小网膜细胞中多囊体、板膜体、溶酶体等细胞器主要集中在细胞核与核下的层面中。
Many organelles of retinular cell, such as multivesicular bodies, vesicular lamellar bodies and lamellar bodies, concentrate in the distal region around the nucleus.
这种无脊椎动物身后拖着长长的布满刺细胞的触角和多褶的口腕，可捕猎水中的浮游生物和小鱼。
The invertebrate hunts by trailing its long sting-cell-covered tentacles and ruffled mouth-arms through the water, combing for zooplankton and larval fishes.
第一只从成体细胞中克隆成功的哺乳动物是多莉羊。
The first mammal to be cloned successfully…was Dolly the sheep.
方法：以大鼠多囊卵巢为动物模型，采用电子显微镜及3-末端原位标记法观察了大鼠多囊卵巢颗粒细胞凋亡的情况。
Methods: PCO model of rat was established. Ovaries were fixed and processed for ultrastructural observation. DNA fragments in apoptotic cells were detected by in situ DNA 3 end labeling method.
剩下短短1亿年左右的时间完成了多细胞生命向多种动植物圆中的植物、哺乳动物、昆虫、鸟类以及其他在地球上生活的物种的进化。
That leaves just a billion years or so for the evolution of the diverse menagerie of plants, mammals, insects, birds and other species that populate the earth.
剩下短短1亿年左右的时间完成了多细胞生命向多种动植物圆中的植物、哺乳动物、昆虫、鸟类以及其他在地球上生活的物种的进化。
That leaves just a billion years or so for the evolution of the diverse menagerie of plants, mammals, insects, birds and other species that populate the earth.
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