Fig. 2. Production of GAGs and glycoproteins after 2 weeks of culture. Safranin O and alcian blue staining were respectively performed for illustrating the positive production of proteoglycans (red) and glycosaminogly-cans (blue) in bone marrow-derived mesenchymal stem cells (BMMSC) a, e, i, m, auricular perichondrocytes (AuP) b, f, j, n dental stem cells (DPSC) c, g, k, o, and nasal perichondrocytes (NsP) d, h, l, p, encapsulated in 3D alginate microsphere in normoxic and hypoxic conditions, respectively, after 2 weeks of culture in chondrogenic medium (scale bar 500 μm).

International Journal of Stem Cells 2023;16:304-14 https://doi.org/10.15283/ijsc21242

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