Conjugate comprises: agent complex comprising an agent surrounded by a sheathing material； and at least one target finding ligand comprising a prostacyclin analogue. An independent claim is also included for a therapeutic composition for treating lung diseases, comprising the above conjugate and auxiliaries, present in a form suitable for inhalation. ACTIVITY : Respiratory-Gen； CNS-Gen. No biological data given. MECHANISM OF ACTION : Gene therapy； Vaccine.
