Category analysis of transcriptional response patterns. Intra-tissue expression patterns of genes showing twofold change or more in iT3 and/or RTH (PV) mice are shown. Red indicates higher expression levels in iT3 or RTH mice; green indicates lower expression in iT3 or RTH mice. Black indicates less than 1.2-fold change. The level of color saturation reflects the magnitude of the expression ratio. The number of genes found in each category is shown.