fig9

Figure 9. Effect of pentoxifylline in combination with different anticancer drugs on the percentage of cell growth of A549 and A549-CDR2 cell lines, assessed by the SRB assay. Cells were treated for 48 h with pentoxifylline at 1.0 mM and (A) paclitaxel at 2.7 nM, (B) carboplatin at 83.7 μM, (C) vinorelbine at 25 nM, or (D) vinorelbine at 25 nM plus carboplatin at 83.7 μM. Data are presented as a percentage of cell growth. ^*,#P ≤ 0.05; ^**,##P < 0.01; ^***,###P < 0.001; ^****,####P < 0.0001; ns: P > 0.05.