Comparison of core circadian clock transcript expression in human heart to mouse hearts or human brain. A) Outer circle; Human heart (data this report), inner circle Mouse heart (data from Table 1, Yan et al 30). B) Comparison of core circadian clock gene transcript expression in human heart (data this report) to human brains (average of all brain regions from Figure 5S in Li et al31. Outer circle human heart; inner circle human brain. Circadian clock transcripts labelled ARNTL, DBP, PER2, NFIL3, NR1D1. Reference hours after sunrise (HASR) are numbered.