Fig. 6From: Early differentiating between the chemotherapy responders and nonresponders: preliminary results with ultrasonic spectrum analysis of the RF time series in preclinical breast cancer modelsEx vivo evaluation of the microstructure changes after chemotherapy. a Adriamycin treatment significantly decreased the tumor cell density in the responders but did not in the nonresponders. The parameters were shown as the means ± SD (* P < 0.001, for comparison between control and treated tumors). b Representative H&E-stained tumor micrographs (original magnification, × 400) show tumor cell density which significantly decreased in the treatment responders as compared with the nonresponders. Scale bar, 50 μmBack to article page