RICHARD BIZLEY / SCIENCE PHOTO LIBRARY RICHARD BIZLEY / SCIENCE PHOTO LIBRARY
T-bacteriophages on E.coli. Artwork of T-bacteriophage virions attacking Escherichia coli bacteria (brown). Each virion has a protein head (orange) containing DNA (deoxyribonucleic acid) genetic material and a contractile tail (shaft) with tail fibres (pink). The virion at bottom right is injecting its viral DNA into the E. coli cell. Once within the cell, the DNA will take over, effectively turning the bacterium into a virus-making machine.
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