Abstract Background A growing body of evidence indicates that abnormal expression of circular RNAs (circRNAs) plays a crucial role by acting as molecular sponges of microRNAs (miRNAs) in various diseases. including cancer. In this study. we explored whether circCCDC85A could function as a miR-550a-5p sponge and influence breast cancer progression. https://chefesquipmenters.shop/product-category/window-squeegees/