Fig. 1

Expression of CAV1 in human normal and pathological endometrial tissues. a: CAV1 protein was detected in immunohistochemical sections as described. Representative results shown for non-cancerous endometrium (a) include normal proliferative endometrium (NPE, n = 3) and endometrial hyperplasia (EH, n = 4). A negative control (without primary antibody) from a endometrial tumor grade III sample is included (NC). Results obtained with endometrial tumors grade I (G1, n = 3), grade II (G2, n = 3) or grade III (G3, n = 3) are also shown (b). Magnification bar, 50 μm. Boxed areas highlighted in the upper panels are shown at a higher magnification (Magnification bar, 300 μm) in the lower panels. c: Specific CAV1 staining was quantified using the ImagePro Plus software (Media Cybernetics, Bethesda, MD, USA). Only epithelial cells were included in this analysis. The Expression Level Score (% ELS) was determined based on averaged optical density and the corresponding area. Statistically significant differences compared to PE using an unpaired t-test are indicated (*, p < 0.05; **, p < 0.01)