Development of lymphatic endothelial cells in embryoid bodies. Differential immunofluorescence stains for CD31 (red; leftmost panels) and LYVE-1 (green; top middle panel) revealed that the CD31+/LYVE-1+ lymphatic vessels also expressed Prox-1 (green; bottom middle panel). Merged images appear in the rightmost panels. See the complete figure in the article beginning on page 1214.