胸腺

Results We know from the chest X-rays that the infant thymus is organ with the most change and it's usually looked like lobar-pneumonia,cardiomegaly and mediastinal tumor so that it brings much trouble to pediatrician and radiologist.

结果 婴幼儿胸腺是胸片中变化最多的器官，常酷似大叶性肺炎、心影增大、纵隔肿瘤等，给影像科医生和儿科医生带来不少的困扰。

Objective To study the toxicity of fluoride on thymic epithelial cells and thymocytes , and to explore its mechanism.

目的 研究氟化物对胸腺上皮细胞的毒性作用及对胸腺细胞发育的影响，探讨其作用机制。

MLT was given to mice through intraperitoneal injection 60 min before the whole-body irradiation with 2 Gy X-rays. Twenty four hours after irradiation, the number of thymocytes and splenocytes, 3[KG*3]H-TdR incorporative rate of thymocytes and T and B lymphocyte transforming rates induced by Con A and LPS were observed.

在此基础上，腹腔注射MLT，观察2GyX射线全身照射后24h小鼠胸腺、脾脏淋巴细胞数量及胸腺细胞3H-TdR掺入率和ConA、LPS诱导的脾T、B淋巴细胞转化率的变化。

Double helix model significance, not only means that has verified the DNA member structure, it also has prompted more importantly the DNA duplication mechanism: As a result of the gland fat ling always with the thymine pair, the bird fat ling always with the cytosine pair, this explained that two chain's basic group orders are each other supplementary, so long as had determined a chain's basic group order, another chain's basic group order also determined.

双螺旋模型的意义，不仅意味着探明了DNA分子的结构，更重要的是它还提示了DNA的复制机制：由于腺膘呤总是与胸腺嘧啶配对、鸟膘呤总是与胞嘧啶配对，这说明两条链的碱基顺序是彼此互补的，只要确定了其中一条链的碱基顺序，另一条链的碱基顺序也就确定了。

American biochemists found out, the main element of nucleic acid bases are gland fat methotrexate, the birds fat methotrexate, thymine, cytosine.

俄裔美国生物化学家列文发现核酸碱基的主要成份是腺膘呤、鸟膘呤、胸腺嘧啶、胞嘧啶。

This kind of configuration suits the multi-nucleotide chain's purine pyrimidine alternate area. in 1989, the American scientists with scanning tunnel electron microscope law visual observation double helix DNA double helix DNA ︰ in 1952, Austrian lineage US biology chemist Zha Qiefu (E.chargaff,1905-) have determined in DNA 4 kind of basic group content, the discovery gland fat ling and thymine quantity are equal, the bird fat ling and cytosine quantity is equal.

这种构型适合多核苷酸链的嘌呤嘧啶交替区。1989年，美国科学家用扫描隧道电镜法直接观察到双螺旋DNA 双螺旋DNA︰1952年，奥地利裔美国生物化学家查伽夫（E.chargaff，1905—）测定了DNA中4种碱基的含量，发现其中腺膘呤与胸腺嘧啶的数量相等，鸟膘呤与胞嘧啶的数量相等。

One of the "sweetbreads", which is in fact the thymus gland or pancreas of a young animal such as calves or veals.

其中一个「胸腺」，就是小牛等的生长腺。

Thus, nucleotides in DNA or RNA are typically called 'bases'; consequently they are commonly referred to simply by their purine or pyrimidine original base components adenine, cytosine, guanine, thymine.

因此，核苷酸的DNA或RNA通常是所谓的'基地'；因此，他们通常被称为只要他们嘌呤或嘧啶在原有的基础上组成部分腺嘌呤，胞嘧啶，鸟嘌呤，胸腺嘧啶。

Nucleosides are compounds composed of a purine or pyrimidine base (usually adenine, cytosine, guanine, thymine, uracil) linked to either a ribose or a deoxyribose sugar.

核苷是由嘌呤基，嘧啶基(通常是腺嘌呤，胞嘧啶，鸟嘌呤，胸腺嘧啶，尿嘧啶)与核糖或脱氧核糖相连而组成的化合物。

With the silver colloid, the bands at 732, 960 and 1333 cm-1 for adenine, 1466 cm-1 for deoxyribose, and 1652 cm-1 for the C=O group of thymine are observably enhanced.

实验结果表明，在银胶作为基底的SERS光谱中，归属于腺嘌呤组分的732cm-1、960cm-1、1333cm-1以及归属于胸腺嘧啶C=O基团的1652cm-1的拉曼信号得到明显的增强。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。