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Lymphoid follicles without germinal centers are present in cervix from women with high-grade SIL. Immunohistochemistry on serial sections from a paraffin-embedded sample of high-grade SIL (HIV-negative) was performed with antibodies against CD4 (a), CD20 (b), CD8 (c), and CD68 (d); positively stained cells appear brown. The stromal-epithelial junction is marked with a dashed line. Photos taken with 10X objective. E, epithelium; S, stroma; G, endocervical gland.
