Fig 3.

(a) Soluble triggering receptor expressed on myeloid cells 1 (sTREM-1) secretion by human monocytic cells (MM6) cells after 3 h of challenge with 10 species biofilm supernatant, as well as supernatants of biofilms in which the three red complex species were excluded from the composition (*P = 0·0067; ‡P = 0·0023). (b) Relative TREM-1 mRNA expression after 3 h of challenge (*P = 0·0256; ‡P = 0·0033; #P = 0·0199). BF = 10-species biofilm; control = no biofilm; -RC = seven-species biofilm excluding the ‘red complex’.