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Cannabinoid signaling by CB1 receptors drives fibrogenesis and fat accumulation in liver. A report in this issue of Cell Metabolism (Jeong et al., 2008) now links hepatic stellate cells, a resident liver fibrogenic cell type, to the generation of steatosis through production of the endocannabinoid 2-arachidonoylglycerol (2-AG) after ethanol feeding, leading to paracrine stimulation of hepatocyte CB1 receptors.
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