Figure 4From: Transfer of malignant trait to immortalized human cells following exposure to human cancer serumCancer patient serum preserved the expression of stem cell markers of hESCs. hESCs were cultured for 1 or 3 weeks as monolayer (A-D) or sphere conditions (E) in control human serum (CTL) or cancer patient sera (see Additional file 1: Table S1). Cells were than analyzed by flow cytometry for the expression of stem cell markers.Back to article page