所有实验小鼠自3周龄断奶后高脂饲喂。
All mice were fed an "atherogenic diet" from the age of 3 weeks after being weaned.
约在5周龄时内脏器官重超过饲养阶段的平均数。
The weights of the internals organs at 5 weeks old were over the average of the feeding term.
结果： 内皮依赖性血管舒张功能随着周龄的增加而减弱。
RESULTS: The results indicated that the endothelium-dependent vasodilation was weakened along with aging.
在1 ~2周龄时试验组胸腺组织结构出现轻微退化现象。
At 1 ~ 2 week-age, the thymus structure in the experiment group presented a light degeneration.
CK7仅限于14周龄之后的胆管板细胞和胆管上皮内表达。
CK7 expression was limited in the ductal plate cells and bile duct cells from the 14th week.
犬疱疹病毒感染是一种通常导致小于三周龄的幼犬死亡的传染病。
Canine herpesvirus is an infectious disease that is a common cause of death in puppies less than three weeks old.
他和他的同事应用适应实验去检查30- 38周龄胎儿的记忆。
He and his colleagues used the habituation tests to examine memory in fetuses 30 to 38 weeks old.
科学家比较了之前已测试过和之前没有测试的38周龄胎儿的反应。
The scientists compared the response of the 38-week-old fetuses who had been tested before with that of fetuses who had not been tested before.
猪副嗜血杆菌感染的确诊不能仅凭以往病史、发病周龄和临床症状。
Diagnosis of HPS infection cannot be made on the basis of history, age of occurrence, or clinical signs only.
分别于第1~4周龄时取十二指肠在光学显微镜下进行组织学观察。
Duodenum samples were taken from 1,2,3,4 wk broilers for morphological study with light microscopy.
方法：自3周龄兔关节面分离软骨细胞，经离心管培养2周形成软骨。
Methods:Chondrocytes were isolated from joint surfaces of rabbits aged 3 weeks and formed cartilages by cultivation in centrifuge tubes for 2 weeks.
目的：研究诺氟沙星对不同周龄大鼠的致痫作用及是否有剂量依赖性。
AIM: To study epilepsy induced by norfloxacin (NFLX) in various weeks old rats and its dose_dependancy.
这些都是只有7周龄，他们成大就是美洲虎，北美地区最大的猫科动物。
These are only 7 weeks old, when they grow to be Jaguars, the biggest cat in North America.
对河北柴鸡1～16周龄生长曲线进行了分析和非线性曲线拟合研究。
The growth curves of Hebei domestic chickens from 1 to 16 weeks old were analyzed and fitted with three kinds of non-linear models.
方法：自3周龄兔关节软骨分离软骨细胞，经离心管培养2周形成软骨。
Methods: Chondrocytes were isolated from articular cartilages of 3 week old rabbits and formed cartilages by cultivation in centrifuge tubes for 2 weeks.
症状通常始发于7-10周龄，包括：虚弱、反射降低、丧失吠叫能力。
Symptoms usually start between the ages of 7 to 10 weeks, and include weakness, decreased reflexes, and loss of bark.
这小组是在34周龄和然后再于38周龄进行适应试验之后得出这个结论的。
The team came to this conclusion after performing the habituation tests at 34 weeks and then again at 38 weeks.
严密测定3 - 6周龄鸡只的法氏囊体积有助于确定鸡只被感染的具体时间。
Monitoring bursa sizes closely in the 3-6 week age range will also help determine the age when the birds are being infected.
目的探讨人12周龄胚胎脑脉络丛上皮细胞是否具有神经干细胞的生物学特性。
Objective In order to investigate whether the 12-week-old embryo brain choroid plexus epithelial cells have neural stem cell biological properties.
而法国番鸭随着周龄的增加，皮脂率和腹脂率分别降低了2.39%和1.01%。
Subcutaneous fat percentage and belly fat percentage of 'France Muscovy' decreased by 2.39 % and 1.01 %.
应用回归分析建立了泰和乌骨鸡肌肉IMP含量依周龄和体重的最佳线性回归方程；
We obtained the best regression model between weeks of age and body weight, muscle IMP content.
研究通过诱导就巢，观察并统计了东乡绿壳蛋鸡47 ~ 66周龄就巢发生情况。
The broody traits during 47 ~ 66 WKS of age of Dongxiang Blue-shell chickens which were induced to be broody were observed and analyzed.
为研究腐植酸钠对蛋种鸡生产性能的影响，选用48周龄尼克红父母代蛋鸡进行试验。
In this paper, the effects of sodium humate on laying performance of Nick(Parent Stock) egg genus chicken aged 48 weeks was studied.
目的对1日龄和20周龄的BWEL -SPF鸡的各项生理指标进行测定和比较。
Objective Physiological values of BWEL-SPF chickens of 1 day old and 20 weeks old were measured and compared.
在幼獐出生后的早期，哺乳行为的启动是由母獐启动的，但幼獐一周龄后即为启动者。
In the early stages, nursing appeared to be initiated by the dam but after about one week of life the fawn was usually the initiator.
结论从2周龄大鼠肝组织中成功克隆肝再生增强因子基因，并获得了原核细胞高效表达。
ConclusionThe augementer of liver regeneration gene was cloned from the liver tissue of 2 week old SD rat and the protein encoded by the gene was expressed in the prokaryotic cells.
结果表明，布特火鸡商品代的体重生长拐点为16周龄，16周龄时公鸡的平均体重为9。
The results show that the BUT turkeys growth inflexion is 16 weeks old and the average weight of cocks is 9.
中文摘要：本试验之目的在探讨不同畜舍和周龄对大型黑羽土鸡屠体中脂肪酸组成之影响。
English Abstract : the objective of the study is to determine the effect of different housing and age on the carcass fatty acid composition in large type black native chicken.
方法分别自3周龄大耳白兔关节软骨和半月板分离软骨细胞，行单层传代培养和离心管培养。
Methods Chondrocytes isolated from articular cartilage and meniscus of rabbits aged 3 weeks were respectively passaged in monolayer and cultured in centrifuge tube.
方法分别自3周龄大耳白兔关节软骨和半月板分离软骨细胞，行单层传代培养和离心管培养。
Methods Chondrocytes isolated from articular cartilage and meniscus of rabbits aged 3 weeks were respectively passaged in monolayer and cultured in centrifuge tube.
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