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. Author manuscript; available in PMC: 2016 Sep 1.
Published in final edited form as: Biomaterials. 2015 Jun 20;64:88–97. doi: 10.1016/j.biomaterials.2015.06.038

Fig. 4.

Fig. 4

Chondrogenic induction of dECM-expanded hSDSCs in the presence of IL-1β. Human SDSCs were expanded on either Plastic or dECM for one passage followed by a pellet culture in a serum-free chondrogenic medium supplemented with either 0.1 or 1 ng/mL of IL-1β treatment for 15 days (A), 24 days (B), or the later stage between the 15th and 24th days (C). Chondrogenic induction without IL-1β treatment served as a control. Alcian blue (Ab) was used to stain sulfated GAGs. Immunohistochemistry staining (IHC) was used to detect collagen II (Col II).