. "\"Any process that stops, prevents, or reduces the frequency, rate or extent of the directed movement of a solute from one side of a membrane to the other.\" [GOC:mah]" . . "negative regulation of transmembrane transport" . "down regulation of transmembrane transport" . "down-regulation of transmembrane transport" . "downregulation of transmembrane transport" . . . . "inhibition of transmembrane transport" .