[Ultrastructure of cytoplasmic deposits and enzyme studies in human primary liver cancer].

Authors examined of the fine structure and electronhistochemical properties of deposits observed in two cases of primary liver carcinoma. It was established, that these deposits are formed by filaments consisting of fine granules of 70 A in diameter. On the basis of morphological picture and results of the investigation by enzymatic-dogestion technique it is believed, that deposits are the product of the rough-surfaced endoplasmic reticulum and their occurrence indicate the impairment of it's function. Deposits--as revealed by the enzymatic-digestion technique--consists of complex material, the protein component of which contain large quantities of basical amino acids.