Stem cells can be broadly categorized https://www.vegastemcell.com/ into embryonic stem cells, adult stem cells, and induced pluripotent stem cells (iPSCs). Each type has unique properties and potential applications. In clinical settings, adult stem cells—particularly mesenchymal stem cells derived from bone marrow or adipose tissue—are most commonly used due to ethical considerations and safety profiles. Thai clinics primarily focus on these types, ensuring treatments align with international standards.