Extended Data Fig. 3: Universal clocks applied to species with fewer than 15 samples.
From: Universal DNA methylation age across mammalian tissues
The title of each panel lists the type of universal clock: a, Clock 1 = basic universal clock based on log(Age + 2), b, d, Clock 2 = universal clock for relative age, c, Clock 3 =universal clock for log-linear age. Leave-one-fraction-out (LOFO) methylation estimates versus a–c, chronological age or d, relative age for clock 2. The respective inverse transformations were applied to arrive at DNA methylation-based estimates of chronological age in years or relative age (y-axis).
