dna flow cytometry of canine mammary tumours: the relationship of dna ploidy and S-phase fraction to clinical and histological features

The dna ploidy status and S-phase fraction (spf) of benign proliferative lesions (bpl) and malignant tumours (mt) in the mammary glands of dogs were determined by flow cytometric analysis and the results were related to their clinical and histological features. Seven (14·3 per cent) of 49 bpl and 16 (48·5 per cent) of 33 primary mt had aneuploid G0,1 peaks (P