No two cells are ever genetically identical. Within a common hyper-mutable region, tandem repeats, the mutation rate is 10^-3 to 10^-5. There are over 10^5 tandem repeats in the genome, and therefore at least one mutation is expected for every cell division. Many other types of hyper-mutable regions exist in the human genome.
In this research they only examine one form of genetic variation, SNPs. These findings only reflect a small proportion of the somatic variation present in the body.
There is no real surprise in these results, but the data may nevertheless be useful!
(while most here understands CPU RAM RAII DRY etc., you might want to mentions that SNP means "single nucleotide polymorphism", which are mutations where just a single base pair differs.)
In this research they only examine one form of genetic variation, SNPs. These findings only reflect a small proportion of the somatic variation present in the body.
There is no real surprise in these results, but the data may nevertheless be useful!