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Competitive binding of dodecapeptide (solid circle) and trivalent construct (open circles) to glioblastoma cells. Trivalent construct exhibits an avidity of approximately 0.79 μM while the dodecapeptide has an affinity of approximately 4.28 μM. Continuous lines depict theoretical binding fit for the affinity constant, dashed (dodecapeptide) and solid (trivalent). Error bars depict standard error of the mean.
