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File:Siphovirus.tiff

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Summary

Description
English: Electron micrographs of bacteriophages from Cutibacterium acnes (formerly Propionibacterium acnes). Phages were negatively stained with 0.75% uranyl formate and subjected to transmission electron microscopy. The phages have a head of approximately 55 nm in diameter, loaded with genetic material. Their tails have a size of 150 × 10 nm and are flexible and non-contractile.

The upper micrographs show Propionibacterium phage PAD40 and PAD11 (NBBI TaxIDs 504513 and 504513 respectively).

In the lower micrograph, Propionibacterium phage PAD25 (NCBI TaxID 504506) is adhering to bacterial cell debris, and two phages have lost their heads. At the attachment site between the phage and the cell debris, a base plate with attached spikes can be observed. All phages were classified as Siphoviruses based on their morphology.
Date
Source BMC Microbiology 2008, 8:139 doi:10.1186/1471-2180-8-139
Author Rolf Lood, Matthias Mörgelin, Anna Holmberg, Magnus Rasmussen and Mattias Collin

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2 December 2011

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Date/TimeThumbnailDimensionsUserComment
current14:31, 2 December 2011Thumbnail for version as of 14:31, 2 December 20111,048 × 1,057 (1.09 MB)Alexbateman

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