Figure 2

Serum levels of NGAL depicted as box-plots. (Boxes represent the interquartile range; lines inside boxes represent the median value; whiskers represent 5^th and 95^th percentiles). The 1-5 scale represents breast abnormalities of increasing severity as follows: 1: Healthy controls (N = 30), 2: Sclerosing adenosis (N = 35), 3: Atypical ductal hyperplasia (ADH) (N = 18), 4: Ductal carcinoma in situ (DCIS) (N = 32) and 5: Invasive ductal carcinoma (IDC) (N = 28).