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BrdU labeling to measure proliferating cells in pregnant and lactating MGs. BrdU positive cells for controls and Grx3 MKOMGs were counted and expressed as a ratio of positive nuclei to the total number of nuclei counted in the percentage. A: ducts in pregnancy day 14.5; 18–28 ducts were counted. B: ducts in lactation day 1; 18–24 ducts were counted.
