Poor invasion of trophoblastic cells but normal plaque formation in fibroblastic cells despite actA deletion in a group of Listeria monocytogenes strains persisting in some food processing environments.

在某些食品加工环境中持续存在的单核细胞增生李斯特菌菌株中，尽管 actA 缺失，但滋养层细胞侵袭性差，成纤维细胞斑块形成正常