Any process that activates or increases the frequency, rate or extent of 3'-UTR-mediated mRNA stabilization.
Synonyms:
exact_synonym:
positive regulation of 3'-untranslated region-mediated mRNA stabilization; up regulation of 3'-UTR-mediated mRNA stabilization; up regulation of 3'-untranslated region-mediated mRNA stabilization; upregulation of 3'-UTR-mediated mRNA stabilization; upregulation of 3'-untranslated region-mediated mRNA stabilization
narrow_synonym:
activation of 3'-UTR-mediated mRNA stabilization; activation of 3'-untranslated region-mediated mRNA stabilization