12. Observe and Reflect: Carefully compare sample 2 (BCG + albumin) to the blank after 50 min. Remove the dialysis tube to better observe any color change. Does any of the dye leak? What does this tell you about the reversibility of dye-albumin binding? Why is this important for drug delivery? 13. Reflect: Why is reversibility of dye binding relevant for competition between two drugs? If binding was irreversible, would it be possible for one drug to displace another? Explain.
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