Nine studies present recent developments in understanding how liver cells differentiate and establish sublobar, compartment- specific, functional phenotypes, and how the new information has facilitated research on hepatic physiological processes and pathogenic conditions leading to liver diseases. The topics include the metabolic zonation of liver parenchyma and its regulation in the short and long term, sinusoidal structure and dynamics, the pathobiology of hepatic stellate cells, the role of hepatic macrophages in inflammation and tissue injury, human lymphocytes, and the tumoricide function of pit cells. Annotation c. by Book News, Inc., Portland, Or.