实验动物基本参数

ABSTRACTFibroblast growth factor (FGF) signaling plays a signifigant role in embryonic development. Particularyl FGFs are implicated in mediating epithelial-mesenchymal interactions by means of regula ...

ObjectiveThis experiment explores the ability of the chick chorioallantoic membrane (CAM) to support an excised limb bud from a donor embryo. The chick system will allow observation of general cartila ...

Abstract Choriallantoic membrane (CAM) limb grafting functions as a method to isolate the inductive events of limb formation. Experimenters have the ability to isolate and culture tissues outs ...

The chicken is a classic organism used to illustrate the principles of basic embryology. One of the developmental systems which has been examined in great detail is the circulatory system. In the deve ...

Objective:The purpose of this experiment was to explore the effects of the growth factors bFGF and VEGF on blood vessel formation within the chorioallantoic membrane (CAM) of chick embryos. Background ...

Abstract:Sonic Hedgehog is an essential glycoprotein integral for the proper craniofacial and tail bud development in addition to the development of many other structures. Cyclopamine has been shown t ...

ObjectiveThe purpose of this experiment is to observe the effect of caffeine on the heart rate of three day old chick embryos by directly treating them with five different concentrations of caff ...

Green fluorescent protein (GFP) is responsible for the bioluminescence of the Pacific Northwest jellyfish Aequorea victoria. In A.victoria the 27-kDa protein absorbs blue light from a photoprotein tha ...

Early in embryonic development the region of the chick embryo which is determined to form a limb first differentiates from the rest of the embryo1. The next step in the formation of the actual limb (w ...

More than 22 million American women smoke and approximately 25% of these women continue to smoke during pregnancy (Lambers and Clark 1996). Cigarette smoke has long been associated with increased heal ...

ObjectiveThe purpose of this experiment is to determine how the development of bone and cartilage in a chick are affected by treating the embryo with nicotine at early stages of development.Introducti ...

Put 500 mL of distilled water in a 1-L beaker. Add the following: Inorganic salts Muraschige�Skoog Organic medium � 34.6 g NaH2PO4H2O (stock 17 g/L) � 10-mL stock Organic constituents ucrose (6 % fina ...

蚊子是许多哺乳动物病原的宿主，包括寄生虫、细菌、病毒和真菌。疟疾主要是通过按蚊传播的疾病。为了控制疾病，了解传播的过程非常重要，因此需要研究蚊子幼虫的环境适应性。蚊子幼虫能够适应多变环境是因为蚊子的直肠有一个高度发育的离子调控系统。直肠负责吸收离子和营养，排出过量的盐和废弃物。但是这种调节的过程一直不清楚。 2010年，美国佛罗里达大学和MBL的科学家Smith等人使用非损伤微测技术等方法研究了按 ...

IntroductionFetal Alcohol Syndrome (FAS) is caused by exposure of the developing embryo to alcohol one of several teratogenic agents which adversely affect the developing embryo. FAS is one of the mos ...

网络 第九节　猪（Swine；Sus scrofa）和小型猪 　　一、生物学特性和解剖生理特点 　　1．猪属哺乳纲、偶蹄目，猪科。 　　2．猪和人的皮肤组织结构很相似，上皮修复再生性相似，皮下脂肪层和烧伤后内分泌与代谢的改变也相似。 　　通过实验证明2、3月龄小猪的皮肤解剖生理特点最接近于人，见表2-6人与3月龄小猪皮肤各结构厚度的比较（ ...

网络 第八节　猫（Cat;Felis Catus） 　　一、生物学特性和解剖生理特点 　　1．猫的牙齿与其他动物不同，共有30个牙齿，12个不大的门齿（上下颌各6个），4个锐利的犬齿，其余为锐利的假臼齿和真臼齿。通常上颌的后假臼齿和下颌的第一真臼齿特点粗大，因而命名为食肉齿。猫的牙齿特点，使猫便于吃鱼骨头等硬性食物。家猫舌上的丝状乳突被有较厚的角质层 ...

网络 第七节　猴（Monkeys） 　　一、生物学特性及解剖生理特点 　　1．猿猴属于灵长类动物，其特点正如1873年D.S.Georpe提出的那样，具有如下几个特征：（1）有爪的哺乳类动物；（2）有胎盘的动物；（3）有较高的眼眶；（4）有发达的盲肠；（5）胸部有二个乳房；（6）有三种牙齿和脱落更新的恒齿；（7）姆指与其他指头呈相反的位置；（8）脑壳 ...

网络 第六节　狗（Dog;Canis familiaris） 　　一、生物学特性和解剖生理特点 　　1．狗属哺乳纲、食肉目、犬科。 　　2．狗具有发达的血液循环和神经系统以及大体上和人相似的消化过程，在毒理方面的反应和人比较接近，内脏与人相似。 　　3．狗的嗅脑、嗅觉器官和嗅神经极为发达。鼻长，鼻粘膜上布满嗅神经，能够嗅出稀释一千万分之一 ...

网络 　　三、主要品种 　　人类对兔子进行研究已有几个世纪。实验研究用兔有38种不同的类型，此外还有一些供玩赏的类型。我国医学科研和教学中最常用的有下列三个品种： 　　1．中国本兔（又名白家兔、菜兔）：是我国劳动人民长期培育成的一种皮肉兼用，又适合实验需要的品种。饲养历史悠久，全国各地均有分布。毛色为纯白、体型紧凑，体重3～5斤，红眼睛，嘴较尖、耳朵 ...

网络 第五节　家兔（RabbitOryctolagus curiculus） 　　一、生物学特性和解剖生理特点 　　1．家兔属于哺乳纲、啮齿目、兔科、草食性哺乳动性。 　　2．家兔体小力弱、胆小怕惊、怕热、怕潮，喜欢安静、清洁、干燥、凉爽的环境，不能忍受污秽的条件。 　　3．是食草类（Herbivorous）单胃动物。饲养原则是以青粗食米 ...