Fig. 2.

a Attachment of RPCs to substrate surfaces after 2 days growth. Substrate microtopography of 25 µm well PCL leads to significantly more RPC attachment compared to unstructured PCL and TCPS surfaces. Fluorescence images of DAPI-stained RPC nuclei attached to b TCPS, c unstructured PCL, and d 25 µm well PCL. *p < 0.05, Student-Newman, Keuls test. Error bars indicate standard deviation over three independent experiments