. "\"Any process that stops, prevents, or reduces the frequency, rate, or extent of B cell mediated immunity.\" [GOC:add]" . . "negative regulation of B cell mediated immunity" . "down regulation of B cell mediated immunity" . "down-regulation of B cell mediated immunity" . "downregulation of B cell mediated immunity" . "negative regulation of B lymphocyte mediated immunity" . "negative regulation of B-cell mediated immunity" . "negative regulation of B-lymphocyte mediated immunity" . . . . "inhibition of B cell mediated immunity" .