pCCLsin.cPPT.ET.coFVIII.142T and pCCLsin.cPPT.ET.coFIX.XTEN.142T were constructed by standard cloning techniques, by exchanging the gene synthesized different versions of the human FVIII cDNA (DNA 2.0) with FIX into the previously described pCCLsin.cPPT.ET.canineFIX.142T (NheI-SalI)14....