Bacteriophage lambda DNA ejection.

http://www.pubmedcentral.nih.gov/articlerender.fcgi?artid=1976217&rendertype=abstract This is a microscope recording showing single viruses releasing their genomes under the microscope. The viruses are particles of bacteriophage lambda, which infects E. coli but is here tricked into ejecting its DNA with no bacterial cells present. The DNA becomes fluorescent as it emerges from the phage particle, due to SYBR Gold present in the buffer solution. A continuous flow stretches the DNA so that it may be clearly visualized.