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Correlation of cyclin A, cyclin B1, and Ki-67 labeling indices (LIs) (3a-c), and relationship of LIs in younger patients and in older patients (3d). Cyclin A LIs were positively correlated with cyclin B1 LIs and Ki-67 LIs, whereas cyclin B1 LIs were positively correlated with Ki-67 LIs (3a-c). Younger patients (≤ 40 years; cases 4 and 5) had higher LIs than older patients (3d).
