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Sources of mesenchymal stem cells. This illustration shows human tissue sources: (a) peripheral blood, (b) liver, (c) bone marrow, (d) muscles, (e) skin, (f) adipose tissue and (g) dental tissues: (1. apical dental papilla, 2. dental pulp, 3. pulp from the exfoliated deciduous tooth, 4. periodontal ligament, 5. alveolar bone) [29].
