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Abstract
Bromodeoxyuridine (Brd-Urd) was utilized in vitro to detect proliferating cells in 33 samples of ascitic and pleural effusions of ovarian malignancies and the results were compared with DNA flow-cytometry. Percoll separated tumor cells were incubated in vitro with Brd-Urd. After treatment with anti-Brd-Urd monoclonal antibodies the proportion of fluorescent cells was evaluated on slides by microscopy. A good correspondence (r=0.93) was found between the proportion of cells labelled with Brd-Urd and the S-phase cells evaluated from the DNA histograms. S-phase values were found to be higher in tumors with aneuploid than in diploid DNA index. Poorly differentiated tumors had higher values as compared to moderately or well differentiated tumors.