Correction: BMC Complement Altern Med 19, 155 (2019)

https://doi.org/10.1186/s12906-019-2570-0

Following publication of the original article [1], the authors identified an error in Fig. 4. The correct figure is given below.

Fig. 4
figure 1

Histological and immunohistochemical analysis of osteochondral defects repair in rabbit knees. Arrows pointed out the significant changes of regenerated tissues in the four groups

The original article has been corrected.