At a symposium in Wuppertal held on 26 September 1995, Dr. Karl-Georg Metzger was honored, on the occasion of his retirement, for his scientific contributions and involvement in antibacterial drug research and develop­ ment within Bayer AG. In 1963 Dr. Metzger was the first ’molecular micro­ biologist’ to join Bayer in the field of antibacterial research. Karl-Georg Metzger studied physics and biology at the University of Mainz from 1950 to 1953 and continued his scientific education, with a grant from the Deutsche Forschungsgemeinschaft, in Frankfurt on Main (1953-1956). From 1956 to 1958, under Professor Kaplan, he worked on his DNA following treatment of PhD, studying on ’Energy conduction along bacteria with UV light and X-rays and the formation of mutations’. He was awarded his PhD in 1959. From 1958 to 1963 he was research assistant in ra­ diobiology development at the Institute of Genetics in Cologne. During the following years he became fascinated by the emerging fields of molecular biology and gene technology. He worked together with the molecular gen­ eticists W. Harms and M. Delbriick, who built up one of the most renowned institutes in the world, in Cologne. ’’An incredibly interesting time:’ Dr. Metzger remembers, in which he got to know a whole series of Nobel prize winners from Niels Bohr to Watson and Crick and Joshua Lederberg, the first to recombine genotypes of bacteria.

• 关于产品：
• ● 正版保障：本网站隶属于中国国际图书贸易集团公司，确保所有图书都是100%正版。
• ● 环保纸张：进口图书大多使用的都是环保轻型张，颜色偏黄，重量比较轻。
• ● 毛边版：即书翻页的地方，故意做成了参差不齐的样子，一般为精装版，更具收藏价值。
• 
  关于退换货：
• 由于预订产品的特殊性，采购订单正式发订后，买方不得无故取消全部或部分产品的订购。
• 由于进口图书的特殊性，发生以下情况的，请直接拒收货物，由快递返回：
• ● 外包装破损/发错货/少发货/图书外观破损/图书配件不全（例如：光盘等）
  并请在工作日通过电话400-008-1110联系我们。
• 签收后，如发生以下情况，请在签收后的5个工作日内联系客服办理退换货：
• ● 缺页/错页/错印/脱线
• 
  关于发货时间：
• 一般情况下：
• ●【现货】 下单后48小时内由北京（库房）发出快递。
• ●【预订】【预售】下单后国外发货，到货时间预计5-8周左右，店铺默认中通快递，如需顺丰快递邮费到付。
• ● 需要开具发票的客户，发货时间可能在上述基础上再延后1-2个工作日（紧急发票需求，请联系010-68433105/3213）；
• ● 如遇其他特殊原因，对发货时间有影响的，我们会第一时间在网站公告，敬请留意。
• 
  关于到货时间：
• 由于进口图书入境入库后，都是委托第三方快递发货，所以我们只能保证在规定时间内发出，但无法为您保证确切的到货时间。
• ● 主要城市一般2-4天
• ● 偏远地区一般4-7天
• 
  关于接听咨询电话的时间：
• 010-68433105/3213正常接听咨询电话的时间为：周一至周五上午8：30～下午5：00，周六、日及法定节假日休息，将无法接听来电，敬请谅解。
• 其它时间您也可以通过邮件联系我们：customer@readgo.cn,工作日会优先处理。
• 
  关于快递：
• ● 已付款订单：主要由中通、宅急送负责派送，订单进度查询请拨打010-68433105/3213。