Figure 5
From: Dynamics and mechanisms of quantum dot nanoparticle cellular uptake
TEM images illustrating the process of QD cellular uptake and intracellular translocation. a. QD endocytosis through plasma membrane invagination. Black arrows point to QDs attached to the cell surface; the white arrow denotes the membrane pit engulfing QDs. b. QDs sequestered and dispersed in early endosomes (white arrow). c. QDs condensed in late endosomes/lysosomes (white arrow).