How cells measure up (IMAGE) John Innes Centre Caption CAPTION: The image shows a shoot apical meristem (at the centre) with floral buds emerging on its flanks. Cells marked in green are about to enter DNA replication, whilst the magenta marker shows accumulation of KRP4, which is part of the mechanism that regulates cell size. Credit John Innes Centre 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.