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Figure 3 Effect of 5HT on VSMC preincubated with mox-LDL. Synchronized VSMCs were stimulated with different concentrations of mox-LDL. After 24 h of incubation, indicated concentration of 5HT was added and incubated for an additional 24 h. One hundred percent equals the baseline value for 3H-thymidine incorporation into DNA (280 ± 19 cpm). Values shown are mean ± standard error. Abbreviations as in Figure 2. n = 24; *p < 0.01 compared with corresponding control; **p < 0.01 compared with corresponding lipoprotein group.