. "\"Any process that activates or increases the frequency, rate or extent of histone H3-K27 acetylation.\" [GOC:BHF, GOC:TermGenie]" . . "positive regulation of histone H3-K27 acetylation" . "activation of histone H3 acetylation at K27" . "activation of histone H3K27 acetylation" . "positive regulation of histone H3 acetylation at K27" . "positive regulation of histone H3K27 acetylation" . "up regulation of histone H3 acetylation at K27" . "up regulation of histone H3-K27 acetylation" . "up regulation of histone H3K27 acetylation" . "up-regulation of histone H3 acetylation at K27" . "up-regulation of histone H3-K27 acetylation" . "up-regulation of histone H3K27 acetylation" . "upregulation of histone H3 acetylation at K27" . "upregulation of histone H3-K27 acetylation" . "upregulation of histone H3K27 acetylation" . . . "activation of histone H3-K27 acetylation" .