In the article titled “Andrographolide Enhances Proliferation and Prevents Dedifferentiation of Rabbit Articular Chondrocytes: An In Vitro Study” [1], the authors informed the journal that Figures 3–6 are incorrect due to errors in the placement of samples. Initially, an expression of concern was published [2], but the authors have since been able to provide the raw data and corrected figures. The corrected figures are as follows.


Figure 3 
Safranin O staining showing the synthesis of extracellular matrix. Rabbit articular chondrocytes were cultured in vitro with 0 (Control), 1.5 (T1), 3 (T2), and 6 μM (T3) ANDRO for 2, 4, and 6 days. Cell seeding density: 2 × 104/mL (original magnification ×100). Scale bar = 200 μm.

Figure 4 
Confocal laser scanning microscopy images showing the viability of chondrocytes. Control, T1, T2, and T3 represent groups with 0 (Control), 1.5 (T1), 3 (T2), and 6 μM (T3) ANDRO, respectively, to be cultured in vitro for 2, 4, and 6 days. Cell seeding density: 2 × 104/mL (original magnification × 100). Scale bar = 200  μm.

Figure 5 
Hematoxylin-eosin staining images showing the morphology of chondrocytes. These chondrocytes were cultured in vitro with 0 (Control), 1.5 (T1), 3 (T2), and 6 μM (T3) ANDRO for 2, 4, and 6 days. Cell seeding density: 2 × 104/mL (original magnification × 100). Scale bar = 200 μm.

Figure 6 
Immunohistochemical staining images revealing the presence of collagen type II (COL2A1) and type I (COL1A1). Chondrocytes were cultured in vitro with 0 (Control), 1.5 (T1), 3 (T2), and 6 μM (T3) ANDRO for 2, 4, and 6 days. Cell seeding density: 2 × 104/mL (original magnification × 100). Scale bar = 200 μm.