Whole-genome microRNA microarray for CD44 positive and negative pediatric posterior fossa ependymoma

we used whole-genome microRNA microarray expression profiling as a discovery platform to identify a subset of miRNAs that were differently expressed in CD44-positive pediatric posterior fossa ependymoma compared with CD44-negative ones. we used six CD44 positive and negative pediatric posterior fossa ependymoma respectively from the same hospital during the same period to do the microarray.