yes . the lymphatic system is formed of central lymphatic organs (timus) and splein lymphatic ganglions which are peripheric lymphatic organs. These produce granulocytes and agranulocytes (white blood cells) .Splein (lymphocites) ganglions (lymphocites and monocytes) timus( lymphocytes type LT their role is in specific immunity celled mediated.The white blood cells are agranulocytes (lymphocites moncytes ) and granulocytes (neutrofiles eozinofiles and bazofiles).