Stem Cell Stem cells, found in all organisms, are a type of cell that can replicate and replace damaged or lost cells. Random Glossary Term TB 500 TB 500 is a synthetic version of a naturally occurring peptide, Thymosin Beta-4, which is present in high concentrations in... Sign Up For Our Newsletter Weekly insights into the future of longevity Sign Up
Stem Cell Stem cells, found in all organisms, are a type of cell that can replicate and replace damaged or lost cells.