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Immunofluorescent analysis of Sall4 (red) in human ESCs WIRB3 and HES2. The cells were fixed with 300 uL 4% paraformaldehyde solution for 15 min at RT in the dark, permeabilized with 300 uL 0.25% TritonX-100 solution (diluted in PBS) for 5 min at RT, and blocked with 300 uL 10% BSA solution (diluted in PBS) for 30 min in a 37C incubator. Cells were stained with a Sall4 polyclonal antibody (Product # 720030) at a dilution of 1:250 (2ug/ml) in 3% BSA solution (diluted in PBS) at 4C overnight, and then incubated with a secondary antibody (Red). Nuclei (blue) was stained with DAPI (Product # D1306). Images were taken on a Leica DM5500 microscope at 10X magnification. Data courtesy of Dr. Jianlong Wang's lab.
