HSPB6 and neuroblastoma: Finally using a novel label-free cell monitoring system we were able to confirm that increased intracellular levels of phospho-Hsp20 protects against cytotoxicity in SH-SY5Y neuroblastoma cells associated with diffusible Aβ and that this protection is likely mediated through a direct interaction as opposed to the anti-apoptotic properties of Hsp20.