Mice infected with this virus showed no resistance to bacterial pathogens.

感染这种病毒的小鼠对致病菌没有抵抗力.

Microfiltration can also protect milk from more common bacterial pathogens, potentially extending its shelf life.

微孔过滤也能保护牛奶免于更多常见的细菌病原体的威胁，潜在延长了牛奶的储存期限。

They added that an increase in antimicrobial resistance and virulence of bacterial pathogens after passage through protozoa has been previously demonstrated.

他们补充道：“通过原生生物这个途径繁殖的细菌的抗药性及毒性会得到提高在很早前就得以证实。”

The optimistic view that antibiotics would enable permanent triumph over bacterial pathogens has been challenged by the emergence of antibiotic-resistant microorganisms.

对抗生素耐药的病原微生物的出现对抗生物能够永远抵制细菌微生物这种乐观的观点提出了挑战。