. "Any process that restricts, stops or prevents a cell from specifying into an endoderm cell." . . . "negative regulation of endodermal cell fate specification" . "down regulation of endodermal cell fate specification" . "down-regulation of endodermal cell fate specification" . "downregulation of endodermal cell fate specification" . "inhibition of endodermal cell fate specification" . "negative regulation of endoderm cell fate specification" . "suppression of endoderm cell fate" . "suppression of endodermal cell fate" . . .