Interesting! The article was weak on the science so I found some papers about the "nanodiamonds":

http://pubs.acs.org/doi/full/10.1021/ja0567081 http://pubs.acs.org/doi/abs/10.1021/ja4016815 https://www.opticsinfobase.org/boe/abstract.cfm?uri=boe-5-4-...

Question (I know almost nothing about medicine/biology): I can see how nanodiamonds are useful for general imaging, but how will it help differentiate cancer cells from regular cells? Do the nanodiamonds bind to anything or is it just a emission light source? Thanks.