Fig. 3From: Overexpression of microRNA-21 strengthens stem cell-like characteristics in a hepatocellular carcinoma cell lineOverexpression of miR-21 promotes spheroid formation. a, b MHCC-97H cell line stably overexpressing miR-21 and the corresponding negative control (NC) cell line were induced to form spheroids for 14Â days. The miR-21-overexpressing cell line formed larger, tighter, and more numerous spheroidsBack to article page