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Instructions on assembling icosahedra, links to web sites about teaching, books, and more.

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This web site was created by Division M, which is responsible for its contents.
This web site is supported by ASM and the Membership Board.

Created 1/25/98, revised 7.17.00

Please send comments or corrections to Susan Godfrey ssg1@pitt.edu or
Roger Hendrix rhx@pitt.edu.

Copyright © 1998 American Society for Microbiology, all rights reserved.

Electron micrograph of bacteriophage UrLambda


EM of UrLambda Lambda is a member of the lambda-like (or lambdoid) bacteriophage family. The phage normally used in laboratory experiments do not have the long tail fibers you see here.

The head shells of lambda particles are 50 nm in diameter (T = 7), the tails are 150 nm in length, and in "wild type" lambda tail fibers, if visible at all, are stubs that project from the junction between the tail shaft and the tail spike.

It’s known hosts include E. coli.

The electron micrograph shown at left is by
Bob Duda (University of Pittsburgh).
To see the size of lambda in relation to that of its host E. coli, see this micrograph of a mob attack.

A sculpture of lambda is in the collection of
Dale Kaiser.


The phage facts pages of this site give more information about lambda