RECQ1 expression in tumors of different origins. A) Representative micrographies of immunohistochemical analysis on tissues from different types of tumors. On the left, the perilesional zone and, on the right, the tumoral one. Immunostaining was made using the anti-RECQ1 RQ-FL antibody. The nuclei positive for the protein are in brown and the tissues were counterstained with hematoxylin (O.M 40X). The histograms on the right represent the percentage of nuclei positive for RECQ1 in perilesional and lesional tissues of the indicated tumors.