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One-dimensional electrophoresis of the NAF proteins stained with Coomassie Brilliant Blue R-250. Lane 1, bloody NAF; lanes 2, 3 and 4 watery NAF; lane 5, bovine serum albumin; lanes 6 and 11 molecular weight; lanes 7, 8 and 9, mixed NAF; lane 10, citrine NAF. NAF, nipple aspirate fluid.
