. "Any process that activates or increases the frequency, rate or extent of embryo sac central cell differentiation." . . . "positive regulation of embryo sac central cell differentiation" . "activation of female gametophyte central cell differentiation" . "positive regulation of female gametophyte central cell differentiation" . "stimulation of female gametophyte central cell differentiation" . "up regulation of female gametophyte central cell differentiation" . "up-regulation of female gametophyte central cell differentiation" . "upregulation of female gametophyte central cell differentiation" . .