HUVEC viability and proliferation.

<p>HUVEC viability (<b>A</b>) and proliferation (<b>B</b>) were assessed by XTT assay and BrdU incorporation assay, respectively, following 48 hours of incubation with different PL concentrations (1, 5, 10 and 20%). The percentage of cell viability and proliferation were calculated versus the complete medium (assumed as 100%). Data are means ± SD of values obtained from three independent experiments with six replicates each. * p<0.01 vs. serum-free medium, 1 and 5% PL. .