Comment on

• Chemical reduction of three-dimensional silica micro-assemblies into microporous silicon replicas.

  Bao Z, Weatherspoon MR, Shian S, Cai Y, Graham PD, Allan SM, Ahmad G, Dickerson MB, Church BC, Kang Z, Abernathy HW 3rd, Summers CJ, Liu M, Sandhage KH. Bao Z, et al. Nature. 2007 Mar 8;446(7132):172-5. doi: 10.1038/nature05570. Nature. 2007. PMID: 17344850