CD63 and neoplasm: All three lines (Figure 4B–D) exhibit a comparable sequential association of EGF-QDs with EEA1 (15 min, maximal M1 ≈ 0.5), then with Rab7 (at 30 min M1 ≈ 0.48 and remains at this level) and CD63 (starting at 30 min with slow growth of M1 up to approximately 0.6 by 150 min); however, notable discrepancies were observed compared to tumor cells (Figure 3).