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Reproducibility of dual-radiolabelling experiments involving 3H-radiolabelled liposomes (A) and 125I-radiolabelled protein (B). Four different experiments were conducted using the same liposome formulation as a control to measure the percentage of the injected dose still present at the injection site on days 1, 4 and 14 post injection. Results denote mean (n = 3 or 5) ± SD.
