From Table 1 , a decreasing trend of the negative z -potential with the increase of the PEG amount on the surface of NLs can also be observed.
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Influence of surface characteristics on the in vitro stability and cell uptake of nanoliposomes for brain delivery.
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The sentences
Similarly, an increasing trend in the uptake can be seen with prolonged incubation time, except for the highest concentration tested (100 μg/mL), for which differences were found between the two cell lines.