Daily lung expression data from young and old mice

Circadian rhythms control the diurnal nature of many physiological, metabolic and immune processes. Circadian rhythms are tighly controlled by positive and negative transcriptional loops; This circuitry is altered during aging altering tissue daily function. Lungs from 2-month-old and 22-month-old male mice were perfused with PBS and harvested every 4 hours from ZT0 (Light onn) to ZT24 with ZT12 corresponding to light off.