False-col TEM of Lambda bacteriophages

False-col TEM of Lambda bacteriophages

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Credit: DR M. WURTZ/BIOZENTRUM, UNIVERSITY OF BASEL/SCIENCE PHOTO LIBRARY.

Caption: False colour transmission electron micrograph of Lambda bacteriophages showing intact (black) & squashed (clear) particles. Bacteriophages are viruses that infect only bacterial cells. Lacking any reproductive machinery themselves, they infect bacteria & commandeer their apparatus for purposes of replication. The genetic material (DNA) of the phage is contained within the head, a 20-faced (icosahedron) figure made up of numerous subunits called capsomers. The head is attached to a tail, which in this species is noncontractile. Entry into the bacteria is achieved by enzyme action. Magnification X31,400 at 35mm size. Original is bw print m090/042.

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Keywords: bacteriophage, bacteriophages, lambda, lambda bacteriophage, microbiology, virology, virus, viruses

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