Fig. 3From: Understanding cellular internalization pathways of silicon nanowiresCross section TEM micrographs represent CHO-β cells incubated with 5 µm wires for a 2, b 3, c 5, and d 10 h at 37 °C. Scale bars are 0.2 µm in a–c and 0.5 µm in d, respectivelyBack to article page