CSE1L staining in vesicles surrounding the outside of cell membrane. The distribution of CSE1L in MCF-7 cells was analyzed by immunohistochemistry with anti-CSE1L antibody. Note the vesicle-like staining of CSE1L in cell protrusions and positive staining of CSE1L in vesicles surrounding the outside of the cell membrane. The scale bar = 30 μm. The photo is derived from a figure in reference 63 .