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. 2013 Jun 28;8(6):e67550. doi: 10.1371/journal.pone.0067550

Figure 1. Association of ST and DT liposomes with HUVECs.

Figure 1

HUVECs (2×104 cells) cultured for 48 h were incubated in the presence of DiIC18-labeled PEG-Lip (○), PRP-PEG-Lip (▴), RGD-PEG-Lip (♦) or Dual-PEG-Lip (•) for 4 h at 37°C. After washing, the amount of liposomes associated with the HUVECs was determined fluorometrically. Association of liposomes is presented as the amount of DiIC18 per cellular protein amount. Data are presented as the mean value and SD. Significant differences: *, P<0.05; **, P<0.01.