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单词 koch phenomenon
释义 koch phenomenon
\ˈkȯk-, ˈkȯḵ-, ˈkōk-, ˈkäk-\ noun
Usage: usually capitalized K
Etymology: after Robert Koch died 1910 German bacteriologist
: the response of a tuberculous animal to reinfection with tubercle bacilli marked by necrotic lesions that develop rapidly and heal quickly and caused by hypersensitivity to products of the tubercle bacillus
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