positively regulates positively regulates MAPK cascade regulation of MAPK cascade positive regulation of MAPK cascade Any process that activates or increases the frequency, rate or extent of signal transduction mediated by the MAPK cascade. GO:0043410 activation of MAPK cascade activation of MAPKKK cascade biological_process positive regulation of MAP kinase cascade positive regulation of MAP kinase kinase kinase cascade positive regulation of MAPKKK cascade positive regulation of mitogen activated protein kinase kinase kinase cascade positive regulation of mitogen-activated protein kinase cascade positive regulation of mitogen-activated protein kinase kinase kinase cascade stimulation of MAPK cascade stimulation of MAPKKK cascade up regulation of MAPKKK cascade up-regulation of MAPK cascade up-regulation of MAPKKK cascade upregulation of MAPK cascade upregulation of MAPKKK cascade biological regulation positive regulation of intracellular signal transduction