nNOS ( NOS1) in rat brain: FFPWS using BD Transduction 610431 ( anti iNOS / NOS2) Image September 23, 2020 Carl Hobbs The datasheet states that it has been reported to x-react with nNOS and also eNOS. On FFPWS after Citric acid HIER I concur. Submitted images shows clear neuronal positivity ( SN compacta cells ).