Bacteriophage

filamentous bacteriophage M13

SEM: The image was taken with a Philips XL30 ESEM in STEM mode, the bright field image (BF) was subtracted from the dark field image (DF) for contrast enhancement. The sample was prepared on a holey film (Quantifoil) and rotary shadowed with platinum / carbon (95/5 w%) under a low angle. The bright spots have their origin in imperfections of the foil,