the ability of a large number of hydantoins and 2-thiohydantoins to induce primary local lymphoproliferative popliteal lymph node ( pln ) reactions has been investigated , as judged by pln weight enlargement , in an attempt to evaluate the discriminating potential of the pln reaction to low mol . wt chemicals and to establish structure-activity relationships .
C0020209
hydantoins
C0039903
thiohydantoins