Cover Picture

CBXs and BMI1 are components of PRC1 complexes which keep the memory of cell identity by maintaining the repression of numerous target genes. They accumulate into nuclear foci called Polycomb bodies. Representative pre‐bleach and post‐bleach recovery images are shown for BMI1‐GFP in foci containing either CBX4‐mcherry (row 1‐3) or CBX8‐mcherry (row 4 and 5). Images of mcherry tagged CBXs, pre‐bleach images, images acquired 0.5s, 10s and 350s after the bleach are arranged respectively in columns 1, 2, 3, 4 and 5.