FIX secretion from FIX–/– murine lung transduced with AAV2/5. (a) Circulating FIX levels over time following viral delivery. White bars correspond to animals that received AAV2/5-CC10-lacZ, black bars to animals that were given AAV2/5-CC10-cFIX. (b) aPTT levels following intranasal delivery of AAV2/5-CC10-lacZ (white bars) or AAV2/5-CC10-FIX (black bars). Values shown are mean ± SD.