This dataset should be used for the practical of the "Advanced Forensic Biology" lesson. It has been slightly modified from the initial source (see below). It consists of two parts: 1) CpG methylation beta values: tabulated separated methylation beta values in a file called cpg_methylation_beta_values.tsv. 2) Samples to chronological age : the relationship between sample identifiers and their chronological age in a tabulated separated file called cpg_methylation_sample_age.tsv. 3) CpG identifier to gene symbol and annotation: a tabulated separated file containing the relationship between CpG island identifier, the corresponding gene and its functional annotation. cpg_methylation_cpg_to_annotation.tsv Dataset provenance: Bocklandt S, Lin W, Sehl ME, Sánchez FJ, Sinsheimer JS, Horvath S, Vilain E. Epigenetic predictor of age. PLoS One. 2011;6(6):e14821. doi: 10.1371/journal.pone.0014821. Epub 2011 Jun 22. PMID: 21731603; PMCID: PMC3120753. GEO link: https://www.ncbi.nlm.nih.gov/geo/query/acc.cgi?acc=GSE28746