1.微生物的毒力就是它在宿主体内繁殖,并由比而引起疾病的能力。通常认为毒力是侵袭力(即微生物在组织中繁殖的能力)和产毒性(即产生有毒物质的能力)的综合。区别毒力的这两种成分是重要的,因为,常常会发生这样的情况,即使某种菌株能免于受吞噬细胞的吞噬因而在组织中繁殖的因素并非是那些和细菌感染的毒性作用有关的因素。 1. The virulence of microorganisms is its ability to multiply in the host body and cause disease by the ratio. Toxicity is generally considered to be a combination of invasiveness (ie, the ability of a microorganism to multiply in a tissue) and toxigenicity (ie, the ability to produce toxic substances). It is important to distinguish between the two components of virulence because it often happens that even if one strain is protected from phagocytosis by phagocytes, the factors that multiply in the tissue are not those associated with the toxic effects of bacterial infection the elements of.