| 2D-DIGE | Two-dimensional difference in gel electrophoresis |
| CT | Circadian time (CT12 corresponding to activity onset in nocturnal mice housed in constant darkness) |
| HSP | Heat shock protein |
| MS | Mass spectrometry |
| qPCR | Quantitative polymerase chain reaction |
| SEM | Standard error of the mean |
| WT | Wild-type |
| ZT | Zeitgeber time (ZT0 and ZT12 corresponding to lights on and off, respectively) |