A facultative parasite can exist as a parasite or a saprophyte. There are two kinds of drags, parasite drag and induced drag. 兼性寄生菌能够象寄生虫或腐生物一样生存。阻力有两种:寄生阻力和诱导阻力。
Legionella pneumophila, the most common cause of Legionaires'disease, is a facultative intracellular parasite bacterium that causes epidemic, sporadic, and nosocomial pneumonia. 嗜肺军团菌是引起军团病的主要病原体,可导致流行、散在和非典型肺炎。
Studies on Biocontrol Mechanisms of the Mycoparasite Agent Trichothecium Roseum; a facultative parasite can exist as a parasite or a saprophyte. 菌寄生真菌粉红聚端孢生防机制的研究兼性寄生菌能够象寄生虫或腐生物一样生存。