Figure 5

Retention of P. aeruginosa LPS assessed by estimating cytokine (IL-1β pg/ml) induction capacity (CIC) in THP-1 cell cultures.
The IL-1β was measured in the supernatant by ELISA. New ultrafilter (NUF); Reference ultrafilter (RUF); Challenge solution (black bars); Filtrates (white bars); *P < 0.001 versus buffer and °P < 0.001 versus corresponding challenge solution; n = 3.