Figure 1. Daily expression pattern of hBmal1, hCry1, hPer1, hClock, hß1-adrenergic receptor (hß1-ADR) mRNA in the human pineal of aged controls (
: Braak 0), preclinical AD (
: Braak I-II) and clinical AD (
: Braak V-VI). The significant daily variation of hBmal1, hCry1, hPer1, hß1-ADR mRNA only appears in Braak 0 (aged controls). *Among Braak 0, values significantly higher than 10001600 (ac) or significantly higher than 10001600 and 22000400 (e). #hCry1 mRNA levels are higher in Braak V-VI than Braak 0 and I-II (b). ## hCry1 mRNA levels are higher in Braak V-VI and Braak I-II than Braak 0 (b).