Expression level of β-III tubulin and nestin on PLO, silk, and silk-CNT composite substrates. Expression intensity of β-III tubulin and nestin observed with fluorescence microscopy. Silk-CNT scaffolds exhibited maximum β-III tubulin expression, while nestin expression exhibited a similar trend. Single asterisk represents P < 0.01, and double asterisks represent P < 0.001.
Chen et al. Nanoscale Research Letters 2012 7:126 doi:10.1186/1556-276X-7-126