常じょう在ざい菌きん

noun

resident flora; resident bacteria; commensal microbiota

Medical term for microorganisms that normally live on or in the body without causing disease under usual conditions. Often contrasted with transient or pathogenic bacteria.

• 皮ひ膚ふには多おおくの常じょう在ざい菌きんが存そん在ざいしている。

  Many resident bacteria are present on the skin.

• 常じょう在ざい菌きんは通つう常じょう、健けん康こうな人ひとには害がいを及およぼさない。

  Resident flora normally do not harm healthy individuals.