Rescaling factors obtained with different lists. This figure represents the rescaling factors for both sets of microarrays each cross represents a microarray. Both 5Gy (A) and 1Gy (B) are shown. The horizontal coordinate gives the rescaling factor obtained with the original list and the rescaling factor extracted from the other experiment is given by the vertical coordinate. Both sets of rescaling factors are very similar showing that lists of constant genes in one experiment can be re-used in another one, provided that the tissues and experimental conditions used are similar.