. "\"Any process that activates or increases the frequency, rate or extent of the chemical reactions and pathways resulting in the formation of MHC class II.\" [GOC:go_curators]" . . "positive regulation of MHC class II biosynthetic process" . "positive regulation of major histocompatibility complex class II biosynthesis" . "positive regulation of major histocompatibility complex class II biosynthetic process" . "positive regulation of MHC class II anabolism" . "positive regulation of MHC class II biosynthesis" . "positive regulation of MHC class II formation" . "positive regulation of MHC class II synthesis" . "up regulation of MHC class II biosynthetic process" . "up-regulation of MHC class II biosynthetic process" . "upregulation of MHC class II biosynthetic process" . . . "activation of MHC class II biosynthetic process" . "stimulation of MHC class II biosynthetic process" .