. "\"Any process that activates or increases the frequency, rate or extent of actin polymerization.\" [GOC:mah]" . . "positive regulation of actin filament polymerization" . "positive regulation of actin polymerization" . "up regulation of actin filament polymerization" . "up-regulation of actin filament polymerization" . "upregulation of actin filament polymerization" . "Note that this term was split from 'positive regulation of actin polymerization and/or depolymerization ; GO:0045758' (sibling term 'positive regulation of actin depolymerization ; GO:0030836')." . . . . "activation of actin filament polymerization" . "stimulation of actin filament polymerization" . "positive regulation of actin polymerization and/or depolymerization" .