Figure 1 (IMAGE) RIKEN Caption The graph plotted for Nanog-GFP population with various LIF concentrations with (white bar) and without (black bar) Ccl2. Abbreviations: Ccl2, CC chemokine ligand 2; GFP, green fluorescent protein; LIF, leukemia inhibitory factor. Credit RIKEN Usage Restrictions None License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.