Figure 3.

Optical microscopy images of leukemia cancer cells. a K562 cells, c K562 treated with DNR, e K562 treated with DNR conjugated with PLA/Au nanocomposites (DNR was 1 × 10-6 M in the above systems); b K562/AO2 cells, d K562/AO2 treated with DNR, f K562/AO2 treated with DNR conjugated with PLA/Au nanocomposites (DNR was 1 × 10-6 M in the above systems).

Li et al. Nanoscale Res Lett 2011 6:29   doi:10.1007/s11671-010-9762-3