Flower-shaped DNA (circular plasmide pEGFP, 3.4 kb. p.) condensates on poly-L-lysine treated mica.  The image was obtained in semicontact mode in air. Z scale is 6 nm.

Image courtesy of M.Savvateev, NT-MDT, Moscow, Russia, 
The sample was kindly given by I. I. Agapov and E.A. Tonevitsky, Institute for transplantation and artificial organs, Moscow, Russia.