An electron microscope study of the perfusion-fixed spleen. II. Fine structure of the sinus lining cells with respect to filamentous structures in monkey spleens.

In the perfusion-fixed spleen of monkey (Macaca mulatta) were studied with the electron microscope the cytoplasmatic structures of the sinus lining cells. The particular interest find the contractile filaments in this cells, which are important for the cell contraction. The connections to the smooth endoplasmatic reticulum are very strong as in the muscle fiber or muscle cell.