. "\"Any process that activates or increases the frequency, rate or extent of T-helper cell differentiation.\" [GOC:go_curators]" . . "positive regulation of T-helper cell differentiation" . "up regulation of T-helper cell differentiation" . "up-regulation of T-helper cell differentiation" . "upregulation of T-helper cell differentiation" . "Note that immunologists typically use the word 'development' to refer to cells of B or T cell lineages undergoing the process that GO describes as 'cell differentiation'." . . . . "positive regulation of T-helper cell development" . "activation of T-helper cell differentiation" . "stimulation of T-helper cell differentiation" .