Fig. 11.2.

Extraction principles using magnetic silica particles. (a) During incubation of the lysed samples, all the target nucleic acid is captured by magnetic silica particles. (b) The NucliSENS easy MAG magnetic device attracts all the magnetic silica, enabling the system to purify the nucleic acids through several washing steps. (c) The heating step releases the nucleic acids from the silica. (d) In the final step, the magnetic silica particles are separated from the eluate by the magnetic device (NucliSENS easyMAG from biomerieux, http://www.biomerieux-diagnostics.com)