. "\"Any process that activates or increases the frequency, rate or extent of astrocyte differentiation.\" [GOC:vp, PMID:15139015]" . . "positive regulation of astrocyte differentiation" . "up regulation of astrocyte differentiation" . "up-regulation of astrocyte differentiation" . "upregulation of astrocyte differentiation" . . . "activation of astrocyte differentiation" . "stimulation of astrocyte differentiation" .