第一节概述 1内分泌(Endocrine)-由细胞分泌,无明显管道排入血液中,通过血液运行特定靶器官,而起效应的一种生理过程。 2内分泌系统(Endocrine system)---由内分泌腺或内分泌细胞组成,是体内信息传递系统。与神经系统密切联系相互配合,共同调节机体各种功能活动,维持内外境的相对稳定

一、食品的安全性是研究分析食品中可能存在的有害或有毒物质对人的影响,分析食品原料及产品生产,贮藏及加工过程中人为导致的 污染和有害物质的产生,食品添加剂等对人的潜在危害

1.生物学的发展和人类生活水平的提高 2.未来的生物学展望 3.科学是双刃剑:生物学面临的挑战

Research on Transgenic Corn转基因玉米研究

一、植物转基因技术 将优良性状的目的基因导入植物细胞或组织,并在 其中进行表达,从而使植物获得新的性状

A basic knowledge of disinfection and sterilization is crucial for biosafety in the laboratory. Since heavily soiled items cannot promptly be disinfected or sterilized, it is equally important to understand the fundamentals of cleaning prior to disinfection (precleaning). In this regard, the following general principles apply to all known classes of microbial pathogens

Human error, poor laboratory techniques and misuse of equipment cause the majority of laboratory injuries and work-related infections. This chapter provides a compendium of technical methods that are designed to avoid or minimize the most commonly reported problems of this nature

As aerosols are important sources of infection, care should be taken to reduce the extent of their formation and dispersion Hazardous aerosols can be generated by many laboratory operations, e.g. blending, mixing, grinding, shaking, stirring, sonicating and centrifuging of infectious materials. Even when safe equipment is used, it is best to carry out these operations in an approved biological safety cabinet whenever possible

The Laboratory biosafety manual has in the past focused on traditional biosafety guidance for laboratories. The manual emphasizes the use of good microbiological work practices, appropriate containment equipment, proper facility design, operation and maintenance, and administrative considerations to minimize the risk of worker injury or illness. In following these recommendations, the risk to the environment and surrounding community-at-large is also minimized

Laboratory/facility commissioning may be defined as the systematic review and documentation process signifying that specified laboratory structural components, systems and/or system components have been installed, inspected, functionally tested and verified to meet national or international standards, as appropriate