definiens: s ~ all mean ~e$ of pet : fotl!itedmicro ~ truc ~ swithbl the respiratory tract, including without Hmitationthe . nasal passage ; provided, . hOWevel ', . tb (: r"~e Field shall not include the use of perforated lllicrostructures incQnnection.wi~ the direct intratracheal . or directpulmonaxy adnUnisttation ( e.g., via bronchoscope Qren¢lQtmchealrube ) of fluorochemicals · or other liquids . Fot clarity •. the Inhale·Fi ~ ld mcludestlie admil)i:$ation " f perforated lTlitrostructures containingco1l1;pounds bymems of metered d?~einhalet\t 4rY powder inhaler ~ . nasal spray, or by nebulizatioJ;l of . perf'oraedmictostructures fonnul ~ d. · with ihwfOCbemicals .as .. suspending .agents, provided that the { Juantiti ~ s. of . fiuotochemicals . $ ~ includ ~ d in such formulation for nebulization dQ not exceed that . which js ~ ommercia11 : r reasonably necessary to . provide effective delivery bftheactive.a ~ eut . It .. is·presentIyanticipated