Fig. 1From: Bladder perforation during transurethral resection of bladder tumour is not a result of a deficient structure of the bladder walla, b Examples of microscopic images showing the expression of type IV collagen by immunohistochemistry (light microscope, ×100 magnification). Note slightly higher expression in a patient from the experimental group (a) as compared to a patient from the control group (b)Back to article page