Intracytoplasmic granule-lamella structures in visceral epithelial cells of human glomeruli

A description is given of the rare occurrence of peculiar oblong structures having a maximal length of about 4.5 micron and a width of 0.5 micron, in the visceral epithelial cells of human glomeruli. These inclusions are marked by regular arrangement of parallel lamellae which are either in parts or over their whole surface associated with ribosome-like particles. Besides speculations on their origin and nature, some literature data come up for discussion.