Hello @berdyaev11 and welcome to Mayo Connect!

Thank you for the article about DNA and bone marrow transplants. That is very interesting. I found a link to this article online to share with anyone who would like to read it:
https://www.avpress.com/news/when-dna-test-says-you-re-younger-man-live-miles/article_c5dcd4fa-197e-11ea-a9d7-ef7c4aa6dd03.html
Are you interested in this because you or a loved one has received a transplant of some type, @berdyaev11?