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canvas prints bacteriophage canvas prints bacteriophages canvas prints dna canvas prints genetic material canvas prints head canvas prints heads canvas prints illustration canvas prints infecting canvas prints microbiology canvas prints particle canvas prints particles canvas prints phage canvas prints phages canvas prints tail canvas prints tails canvas prints

photographs bacteriophage photos bacteriophages photos dna photos genetic material photos head photos heads photos illustration photos infecting photos microbiology photos particle photos particles photos phage photos phages photos tail photos tails photos

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Computer artwork of a T4 bacteriophage virus. The head contains DNA (deoxyribonucleic acid)) inside a protein coat. Attached to this is the tail, consisting of a tube-like sheath and tail fibres (at bottom). T4 bacteriophages are parasites of Escherichia coli, a bacterium common in the human gut. The virus attaches itself to the host bacterium cell wall by its tail fibres; the sheath then contracts, injecting the contents of the head (DNA) into the host. The viral DNA makes the bacteria manufacture more copies of the virus.