Triple label indirect immunofluorescence examination of stem cell marker expression in growing colonies of hESC. A&D GCTM-2 (blue) and Oct-4 (red). B&E GCTM-2 (blue) and CD9 (green). C&F CD9 (green) and Oct-4 (red). Scale bar = 200 μM.
Laslett et al. BMC Developmental Biology 2007 7:12 doi:10.1186/1471-213X-7-12