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Comparison of normal and malignant cells recovered from body fluids and stained with antibodies against MCM cell proliferation markers. The left-hand column shows cells recovered from body fluids of normal volunteers whereas the right-hand column shows cells recovered from patients with malignant or premalignant diseases of the equivalent site (brown nuclei). Images provided by L. Morris and N. Coleman and reproduced from Laskey (2003) with permission.
