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Effect of different administration methods on p53 protein expression levels in tumor tissues. (A) Representative immunohistochemical images in the control, p53 and p53+US groups (from top to bottom). Arrow, positive immunohistochemical staining for p53. (B) Integral optical density results calculated using the pathological image analysis system. n=5; #P<0.05 and **P<0.01, vs. the control group. Ad-p53, adenovirus-p53; US, ultrasonic irradiation.
