. "\"Any process that activates or increases the rate or extent of B cell proliferation.\" [GOC:mah]" . . "positive regulation of B cell proliferation" . "positive regulation of B lymphocyte proliferation" . "positive regulation of B-cell proliferation" . "positive regulation of B-lymphocyte proliferation" . "up regulation of B cell proliferation" . "up-regulation of B cell proliferation" . "upregulation of B cell proliferation" . . . . "activation of B cell proliferation" . "stimulation of B cell proliferation" .