Fig. 3. csn mutants accumulate cells in the G2 phase of the cell cycle. (A-H) Flow cytometric analyses of root tips from wild-type and csn mutant Arabidopsis seedlings as specified. 2C denotes the normal diploid DNA content of cells in G0/G1 phase, 4C denotes cells that have passed S phase, 8C and 16C denote endoreduplicated cells. The experiments were repeated three times (see Table S3 in the supplementary material), and one representative experiment is shown. The csn mutants used for this analysis were 7 days old.