Correction to: Effects of acidic catalysts on the microstructure and biological property of sol–gel bioactive glass microspheres

Correction to: J Sol-Gel Sci Technol (2011) 58:656–663

https://doi.org/10.1007/s10971-011-2441-8

The original version of this article unfortunately contained a mistake in Fig. 4a–b. The correct Fig. 4 is given below.

Fig. 4

Micrographs of ABGM1 (a, b) at different magnification and ABGM3 (c)