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. 2010 Dec 1;5(12):e15105. doi: 10.1371/journal.pone.0015105

Table 1. Comparing protein concentrations and gene expression of 5 pro-inflammatory cytokines in untreated cells and stimulated cells.

Sample Protein Conc. Supernatant (pgmL−1) (±STDEV) P value Protein Conc. Lysate (pgmL−1) (±STDEV) P value Normalized mRNA (fold-change) (±STDEV) P value
TNF Stim. 2510.71 (±708.32) ** 122.31 (±41.03) ** 41.54 (±13.64) **
DMEM 17.17 (±3.88) 2.01 (±0.32) 2.14 (±0.57)
IL-1β Stim. 212.06 (±28.49) *** 21.28 (±6.22) ** 39.80 (±14.57) **
DMEM 6.68 (±4.73) 3.08 (±0.00) 0.15 (±0.08)
IL-6 Stim. 60.64 (±4.37) *** 0.75 (±0.18) * 0.61 (±0.39) ns
DMEM 1.22 (±0.00) 0.06 (±0.00) 0.25 (±0.19)
KC/CXCL-1 Stim. 21.81 (±3.17) *** 1.43 (±0.43) ** 46.82 (±26.00) ns
DMEM 1.22 (±0.00) 0.25 (±0.00) 28.07 (±22.99)
GMCSF/CSF-2 Stim. 38.46 (±4.49) *** 5.16 (±0.39) Ns 25.07 (±13.43) ns
DMEM 1.42 (±0.35) 4.41 (±0.99) 13.80 (±11.14)

Cells were either left untreated in medium (DMEM), or were stimulated with 1 µgmL−1 LPS (Stim.) for four hours (stimulated). The table provides a comparison in protein concentrations (Protein Conc.) in the cell supernatant and lysates, as well as differences in gene expression. Student's t-test was used to calculate the statistical significance between the two groups (ns: not significant, * p<0.05, ** p<0.01, *** p<0.001).