Even after adulthood, stem cells remain in various organs throughout our bodies. These stem cells typically remain dormant until needed, at which point they differentiate and transform into cells that perform specific functions. The primary sites from which stem cells can be easily harvested are bone marrow, adipose tissue (fat), and blood. Extracting stem cells from bone marrow or adipose tissue can involve a burden similar to surgery. In contrast, blood stem cells offer the significant advantage of a relatively simple and comfortable collection process. This provides patients with a more accessible treatment option.
Dr. Jaehyun Song, On Clinic | Last reviewed: 2026-05-23