Figure 1.

The frequency of individual ducts lavaged on repeat visits per woman. The 'Total number of ducts' equals all ducts ever accessed on at least one previous occasion. 'Repeated ducts' equals ducts re-accessed on that specific visit. 'New ducts' equals a new duct not accessed on a previous visit.

Mitchell et al. Breast Cancer Research 2005 7:R1122   doi:10.1186/bcr1348
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