The biochemical reactions and motility observing of pathogenic and nonpathogenic bacteria.
肠道致病菌与非致病菌的生化反应及动力
。
The biochemical reactions and motility observing of pathogenic and nonpathogenic bacteria.
肠道致病菌与非致病菌的生化反应及动力。
Any of various flagellated, usually nonpathogenic protozoa of the genus Giardia that may be parasitic in the intestines of vertebrates including human beings and most domestic animals.
第鞭毛虫
：一种鞭毛形通常是
致病原因的原生动物第虫，
寄生在脊椎动物体内（包括人和大部分家禽）
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