An ultrastructural study was carried out on 114 liver biopsies obtained for diagnostic purposes from patients with various pathological disorders of the liver including hepatitis B-related liver disease, non-A, non-B hepatitis, alcoholic liver disease, fatty change, and cryptogenic cirrhosis. The opportunity was taken to evaluate the significance of intracytoplasmic crystalline structures found in the hepatocytes of nine patients with a variety of liver disorders. The cytoplasmic inclusions varied in size up to 2 microns in length and shape and were not limited by membranes. The presence of these inclusions cannot, however, be correlated either specifically with non-A, non-B hepatitis or with other known nonviral liver disease. The functional, physiological, and pathological significance of the crystalline structures remain to be elucidated.
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