Fig. 4. Cellular uptake of AuNCs conjugated with CTX by using different conjugation approaches. Gold content per cell was analyzed by ICP-AES, and the number of NPs per cell was calculated. The data are represented as different combinations for better understanding of the results. Reported values are mean ± s.d. (n = 3). *p < 0.05; **p < 0.01; ***p < 0.005 vs. UNTR (Student's t test).
