Table 1: Comparison of gene expression profile of four key neural stem cell (NSC) markers.

GeneWT CECE spheresPVR spheresSVZ spheres

GFAP−/++++++
Sox-2++++
Nestin+++++
Nanog++++

Semiquantitative comparison of RT-PCR expression in adult human ciliary body epithelium (CE) whole tissue samples (WT CE) [32] and cultivated spheres from the adult human CE [32], proliferative vitreoretinopathy (PVR) samples [33], and subventricular zone (SVZ) biopsies [34]. No detectable expression: (−), very low: (−/+), low: (+), middle: (++), and high: (+++) expression.