Bacteriophages attacking Pseudomonas aeruginosa bacterium, SEM


Coloured scanning electron micrograph (SEM) of bacteriophages (blue) attacking a Pseudomonas aeruginosa bacterium (purple). A bacteriophage, or phage, is a virus that infects bacteria. The genetic material is contained within the head (round) of the phage. The phage attaches to the surface of a bacterium and injects its genetic material into the cell. The viral genetic material then hijacks the bacterium's own cellular machinery, forcing it to produce more copies of the bacteriophage. When a sufficient number have been produced, the phages burst out of the cell, killing it. Magnification: x14,825 when printed at 10 centimetres tall.


Size: 4900px × 3674px
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Photo credit: © Science Photo Library / Alamy / Afripics
License: Licensed
Model Released: No

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