DNA Repair Factor is now included in Longevinex to enhance DNA repair by providing supplemental DNA parts (nucleotides). The human body usually has a supply of spare DNA parts. But during wound healing or tissue repair, nucleotides that form the steps on the DNA ladder may be in short supply. A shortage of DNA parts can lead to errors in DNA repair and subsequent gene mutations. Living cells are forced to increase abnormally in numbers when there is an insufficient pool of nucleotide spare parts to support normal DNA replication.