Figure 2.

Intracellular localization of Cy5-labelled compounds and of Cy5. (A–D) HeLa cells and (E–H) Hek293 cells were treated with 5 µM of (A and E) PD-Cy5, (B and F) methotrexate-Cy5 and (C and G) Pur-Cy5 or free Cy5 (D–H) for 90 min at 37°C. The scale bars denote 20 µm.