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B2.3.4—Types of stem cells

Stem cell potency describes how many cell types a stem cell can form, from totipotent early cells to multipotent adult cells.

Syllabus
First assessment 2025
Objective
B2.3.4
Level
HL

Concept essentials

  • Totipotent cells have the broadest developmental potential.
  • Pluripotent cells can form many body cell types but not all extra-embryonic tissues.
  • Multipotent adult stem cells form a restricted set of related cell types.
  • Differentiated cells such as neurons have much less developmental potential than stem cells.
ConceptIB Biology HL