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在家里及公共场所充满着各种细菌和病毒。洗手是生活中最基本的除菌措施,是否只洗一遍手就万事大吉呢?我通过体外培养手指表面细菌的实验,来研究细菌的分布、种类和洗手效果。一、试验设计及操作我将细菌培养基分别注入四个平皿中。左手持琼脂培养平板,以大拇指启开平板一侧,用未洗的右手手指在培养基表面轻轻涂抹。依
At home and public places full of bacteria and viruses. Washing hands is the most basic antibacterial measures in life, whether it is just to wash the hands once it is all right? I experimentally cultured bacteria in the finger surface to study the distribution of bacteria, types and hand-washing effect. First, experimental design and operation I will bacterial culture medium were injected into four petri dishes. Hold the agar plate in your left hand, open the side of the plate with your thumb, and gently wipe the surface of the medium with unwashed right hand fingers. according to