Fig. 6. Immunoelectron micrographs showing the morphology of organelles containing NCS-1 at high resolution in PC12 cells. Most immunoreactivity is likely to arise from NCS-1-EYFP because endogenous NCS-1 is much less abundant than NCS-1-EYFP. Immunoreactivity is partially associated with clear vesicles and tubulovesicular organelles (arrows in B-D) but is absent from SGs (arrowheads in A and D). M, mitochondrion. Bars, 100 nm.