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Expression of laminin γ1 in a serous tubal intraepithelial lesion (STIL). The lesion is composed of atypical epithelial cells with enlarged nuclei and lacks of ciliated cells. Although the p53 staining, like a STIC, is diffuse and intense, the Ki-67 labeling index is lower than established STIC with an estimation of approximately 9%. Significantly higher laminin γ1 immunoreactivity is observed in STIL than in adjacent normal-appearing tubal epithelium (asterisk).
