ATM and ataxia telangiectasia: Although the neuronal population in the chimeric primary cultures was mostly represented by GCs and therefore no evidences are available on the effect of ATM-deficient astrocytes on PCs, on the whole, these results suggest that the neurodegeneration and impaired network dynamics in AT may at least in part due to a malfunctioning of cerebellar astrocytes, resulting in aberrant structural connections among neurons.