. "\"Any process that stops, prevents, or reduces the frequency, rate, or extent of immunoglobulin production.\" [GOC:add]" . . "negative regulation of immunoglobulin production" . "down regulation of immunoglobulin production" . "down-regulation of immunoglobulin production" . "downregulation of immunoglobulin production" . . . "inhibition of immunoglobulin production" . . . . . .