致病

The possible risk factors of Kaschin-Beck disease are cereal mycotoxin contamination accompanied with environment selenium-deficiency.

大骨节病的致病危险因素可能是环境低硒条件下的粮食真菌毒素中毒。

A significant reduction in the blood of animals mycotoxin concentration, reducing the toxicity of mycotoxins.

对病毒的吸附作用为75%-100%，致病因子连同粪便一起排出，完全不进入血液，不含抗生素，无抗药性。

ANALOGIES are often drawn between the fields of computer science and biology. The information-processing abilities of DNA are a form of natural molecular computing, and computer viruses leap from machine to machine in ways reminiscent of their disease-causing namesakes. At the International Solid-State Circuits Conference in San Francisco this week, a trio of mighty information-technology firms—Sony, Toshiba and IBM—pushed the analogy a little further. They unveiled a much anticipated new computer chip, four years in the making, the very name of which is a biological metaphor: the Cell.

人们经常把计算机科学和生物学进行类比，DNA的信息处理能力是一种自然分子的计算形式，而计算机病毒则让人想起致病性生物病毒，从一台机子感染另一台机子，而这个星期，信息技术的三巨头——索尼、东芝和IBM在旧金山召开的国际晶体管集成电路会议上，把两者间的这种类比作了进一步的推进，他们披露了一种已经研制了四年的、非常有希望的新型计算机芯片，这种芯片的名字来自生物学：细胞。

It is a highly heritable and complex disease, in a polygenic, non-Mendelian fashion, possibly caused by the interaction of numerous minor effect genes and the influence of the environment.

精神分裂症是一种具有高度遗传性的复杂疾病，在亲代间的传递不遵循简单的孟德尔遗传模式，其致病原因可能涉及到多个微效基因间的相互作用以及环境因素的影响。

Phylogenic analysis based on entire S1 gene sequences showed that majority isolates clustered together with the close phylogenetic relationships. Therefore, we researched pathogenicity of the selected isolate IBV CK/CH/LDL/05II in this group, Pathogenic study showed that this virus caused 100% morbidity and 54.5% mortality to 15-day-old specific-pathogen-free.The kidneys from the dead chickens showed the predominant gross lesions which were pale, mottled, and swollen. The renal tubules and ureters were distended with excess urates.

经S1基因系统进化树分析发现，本实验所分离的大多数IBV毒株(8/12)分布于同一基因进化群内，并且亲缘关系较近，因此，我们对此群中IBV毒株CK/CH/LDL/05II的致病性进行研究，以10~(5.5)×EID_(50)/0.1ml的病毒接种15日龄的SPF雏鸡，鸡群发病率为22/22(100%)，死亡率为12/22(54.5%)，死亡鸡以肾脏肿大、苍白、外观呈现典型的&花斑肾&，肾小管和输尿管扩张并且有尿酸盐沉积为主要病理变化。

Objective］ The study aimed to provid theoretical basis for warning and control of food-borne pathogenic microorganism in tilapia.

［目的］为罗非鱼食源致病微生物的预警和防治提供理论基础。

A/DK/Hubei/216/83(H7N8) shared 96%～98%homology with different subtypes avian influenza viruses which isolated from HongKong during 1972～1997, in addition, evolutionary analysis showed that the remainingfive gene except NA and PB2, had close phylogenetic relationship with 1972～1997strains. A/DK/Hubei/137/83(H10N4), sequence similarity analysis revealed that theNS, PA, PB1, PB2 gene shared 98%～99% homology with the 1997～2004 H5N1subtype avian influenza virus strains, and except NA and M gene, the other five geneformed independence branch with their own, and the distance between the otherisolates were far.

前者HA氨基酸剪切位点序列为P-E-V-V-Q-G-R，后者HA剪切位点序列为P-E-I-P-K-R；2株病毒的NA在第48位氨基酸后无20个氨基酸的缺失；NS蛋白的第79～84位也没有氨基酸的缺失，不具有高致病性特征；A／DK／Hubei／216／83(H7N8)与香港1972～1997年不同亚型AIV的同源性为96％～98％，进化分析表明，除NA和PB2独自成一支外，其余5个基因都与1972～1997年毒株亲缘关系较近。A／DK／Hubei／137／83(H10N4)除NA和M基因外，其他5个基因分别独立自成一支。

Bacterial needle blight of Chinese Fir was one of the main diseases in Chinese fir forests,which was caused by Pseudomonas syringae pv.

杉木细菌性叶枯病是杉木的主要病害之一，由丁香假单胞杆菌杉木致病变种Pseudomonas syringae pv。

The studies biological characteristics of Pestalotia funerea and its pathogenic toxin have important theoretical and practical significances to further explore pathogenic mechanism of this fungus,the occurrence and epidemical law and control method of pine needle blight.

开展枯斑盘多毛孢菌生物学特性及致病毒素的研究对深入探索松赤枯病的发生发展规律、发病机理、防治方法有重要的理论和实践意义。

A love of sunbeds and "binge tanning" on holiday are the root causes of the disease, which kills 50 women under the age of 40 each year.

黑色素瘤致病源自热衷于在假日太阳灯浴床和晒黑，这一疾病每年夺去50名40岁以下女性的生命。

Do you know, i need you to come back

你知道吗，我需要你回来

Yang yinshu、Wang xiangsheng、Li decang,The first discovery of haemaphysalis conicinna.

1〕 杨银书，王祥生，李德昌。安徽省首次发现嗜群血蜱。