Nuclei of Mucous Cell Basal portion of a mucous cell. The nucleus lies basally in cytoplasm rich in RER. An active Golgi body lies adjacent to the nucleus. Electron dense bodies also occasionally occur in this region of the cell. Extensive cytoplasmic extensions, characteristic of the nephrocytes, are absent from the mucous cell. bs = blood sinus eb = electron dense bodies mi = mitochondria ms = mucus secretion n = nephrocyte nu = nucleus rer = rough endoplasmic reticulum Scale bar represents 2 micrometers