Fig. 6

VECs derived from HDFs have the functions of VECs in vitro. A–B In vitro capillary-like tube formation by HDFs treated with different concentrations of CPP (0, 10, 20 μM) for 4, 8, 10 and 12 days. Representative images of capillary morphogenesis are shown at different points in time (A), and tubular length at day 12 (D12) was analyzed by ImageJ software and normalized to the control group (B). C HDFs were treated with or without CPP for 10 days (D10), the laser scanning confocal microscope Zeiss LSM900 (Germany) was used to observe LDL uptake. The ratio of DiI positive cell = (The number of DiI positive cells/The number of cells) × 100%. Scale bar: 20 μm. Data are presented as means ± SEM, **P < 0.01, n = 3