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. 2021 Jun 2;11:11589. doi: 10.1038/s41598-021-90349-6

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© The Author(s) 2021

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Average radius (top) and percentage calcein release (bottom) for the control and Tf-PEG liposomes following the incubation at 37 °C in fetal bovine serum medium for 3 h and 24 h. Results are the average of three liposome batches.