Relative c-Src activity in lobular breast cancer (LBC) samples. Relative fluorescence intensity in matched pairs of invasive lobular carcinoma (ILC) and lobular carcinoma in situ (LCIS), of ILC and nonneoplastic epithelium (N), and of LCIS and nonneoplastic epithelium. LCIS includes atypical lobular hyperplasia (ALH). Bars represent the average intensity ratio between indicated components from 57 LBC samples, and error bars represent the corresponding SD. The dark side bars indicate the data range.