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Immunohistochemistry for placental glutathione S-transferase (GST-P). Note that the larger GST-P-positive foci are found 3 months after green tea extract (GTE) exposure (b) compared with the age-matched controls (a). Bile duct epithelial cells are normally positive for GST-P in both groups. C: central vein. *Glisson’s sheath. ×100.
