[Morphological features of regional lymph nodes and coagulation of the draining lymph in case of experimental apical periodontitis].

During the early stages of experimental apical periodontitis the vascular permeability of the postcapillary venule is increasing. In the lymph draining from the submandibular lymph node it develops a syndrome of disseminated intravascular coagulation. In the sinus of the lymph nodes are stated fibrin sedimentation and thrombus formation. These processes are caused by a correlation of lymph and blood clotting factors and are not existing in the later inflammatory processes.