Sure to Read, magnetic resin to the rescue technic CLEM Bravo!

MagC, collection magnétique de coupes ultrafines pour microscopie corrélative volumétrique à lumière et à électrons

Thomas Templier  University of Zurich and ETH Zurich, Switzerland

 The non-destructive collection of ultrathin sections on silicon wafers for post-embedding staining and volumetric correlative light and electron microscopy traditionally requires exquisite manual skills and is tedious and unreliable. In MagC introduced here, sample blocks are augmented with a magnetic resin enabling the remote actuation and collection of hundreds of sections on wafer. MagC allowed the correlative visualization of neuroanatomical tracers within their ultrastructural volumetric electron microscopy context.

More….. https://elifesciences.org/articles/45696