Constitutively expressed transcripts based on k-means clustering. (a) Relative intensities adjusted by subtracting the value for the A1.0 stage. Constitutive transcripts grouped by the relative intensity values at the A1.0 stage: (b) below 1; (c) between 1 and 8; (d) over 8. Relative expression from a previous anther study on a 22 K Agilent array for probes expressed constitutively in this study is shown (e) relative to the A1.0 stage and (f) not adjusted for the A1.0 stage.
Ma et al. Genome Biology 2008 9:R181 doi:10.1186/gb-2008-9-12-r181