[Prevention using ascorbic acid, hexamethylenetetramine and sodium metabisulfite of the blastomogenic effect caused by the combined administration into the stomach of mice of sodium nitrite with methylurea or with aminopyrine].

It was shown in experiments on 186 mice that formation of tumors of the lung and fore-stomach induced by injection of sodium nitrite in combination with aminopyrine or methylurea is inhibited following treatment with ascorbic acid, hexamethylenetetramine or sodium metabisulfite.