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. 2015 Sep 22;10(9):e0138830. doi: 10.1371/journal.pone.0138830

Fig 3. R. conorii (ISF) induced significant secretion of IL-8 and IL-6, while R. massiliae induced significant production of MCP-1 in infected HMEC-1 cells.

Fig 3

The production levels of MCP-1 (A), IL-8 (B) and IL-6 (C) in the supernatant of Rickettsia-infected HMEC-1 cells was assessed by ELISA. Bar graphs indicate the average and standard error of three independent experiments. White bars represent uninfected cells, grey bars represent R. massiliae-infected cells, and R. conorii (ISF)—infected cells are represented by black bars. *, p < 0.05, ** n.s. = non-statistically significant.