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Infection of macrophage-like cells by Legionella species that have not been associated with disease.

机译:与疾病无关的军团菌感染巨噬细胞样细胞。

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We assessed the ability of Legionella species that have not been associated with disease to infect macrophage-like U937 cells. Two of fourteen species tested exhibited a 50% infective dose that was within I log unit of that of virulent L. pneumophila. Indeed, intracellular CFU of L. jamestowniensis and L. parisiensis increased 100-fold over a 72-h period. These data indicate that additional legionellae can flourish within phagocytes and therefore, can, if given the opportunity, cause disease.
机译:我们评估了与疾病无关的军团菌感染巨噬细胞样U937细胞的能力。测试的14个物种中,有两个物种表现出50%的感染剂量,该剂量在有毒的肺炎乳杆菌的I log单位内。的确,在72小时的时间内,詹姆士L. jamestowniensis和帕里斯L. parisiensis的细胞内CFU增加了100倍。这些数据表明,另外的军团菌可以在吞噬细胞中生长,因此,如果有机会,可以引起疾病。

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