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Nanomedicine Art Gallery
Image 101
T4 Bacteriophage

Image 101      
Title:   T4 Bacteriophage  
Date:   1965  
Artist(s):   Unknown  
Image Size:   42,858 bytes   [CLICK to download]
Image Dimensions:   620 X 664 pixels    
Image Palette:   Black & White    
Image Description:   T4 bacterial virus, an assembly of protein components, is a simple biological "nanomachine". The head is a protein membrane, shaped like a kind of prolate icosahedron with 30 facets and filled with deoxyribonucleic acid (DNA). It is attached by a neck to a tail consisting of a hollow core surrounded by a contractile sheath and based on a spiked end plate to which six fibers are attached. The spikes and fibers affix the virus to a bacterial cell wall. The sheath contracts, driving the core through the wall, and viral DNA enters the cell. Bacteriophages are being studied in anti-bacterial applications as phage therapy.
Copyright Info:   © Copyright 1965 by Scientific American. For reprint permission, please contact Scientific American, Inc., Permissions Department, 415 Madison Avenue, New York, NY 10017, or at
Print Source(s):   R.S. Edgar, R.H. Epstein, "The Genetics of a Bacterial Virus," Scientific American, February 1965.
Online Source(s):   None.

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