Correction: Cell Commun Signal 21, 55 (2023)

https://doi.org/10.1186/s12964-023-01069-5

Following the publication of the original article [1], the authors found an error on SEM images (normal control group) in Fig. 1a. Based on a rigorous attitude, here we have provided the corrected Fig. 1a. This corrected image (normal control) does not affect any conclusion of the article.

Fig. 1
figure 1

FGF19 induces a transient increase in mitochondrial number and an enhanced generation of ATP products. a Representative TEM images showing the changes of mitochondrial number in chondrocytes induced by FGF19 at 200 ng/ml in the presence of KLB (200 ng/ml). The images were chosen based on three independent experiments (n = 3). Orange arrows indicated individual mitochondrion

The original article [1] has been corrected.