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  1. Stem cell - Wikipedia

  2. Stem cell | Definition, Types, Uses, Research, & Facts

  3. What are Stem Cells? - Types, Applications and Sources - BYJU'S

  4. Stem cells: What they are and what they do - Mayo Clinic

  5. Stem Cell Basics | STEM Cell Information - National Institutes of Health

  6. Stem Cells: MedlinePlus

  7. Stem Cells: Types, What They Are & What They Do - Cleveland Clinic

  8. Introduction to Stem Cells | STEM Cell Information

  9. What Are Stem Cells? - Stanford Medicine Children's Health

  10. Stem cells - Latest research and news | Nature