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Bacteriophages attacking (Escherichia coli) SEM X10,000
Bacteriophage Viruses or Phages attacking a bacterial cell (Escherichia coli). Virions consists of a head or capsid containing genetic material and usually a tail and tail fibers (not seen here) which the phage uses to attach to a specific receptor sites on the bacterium. Once attached to the cell surface, genetic material is injected into the bacterium, taking over the bacterium's own cellular machinery and forcing it to produce more copies of the bacteriophage. When sufficient numbers have... more »Bacteriophage Viruses or Phages attacking a bacterial cell (Escherichia coli). Virions consists of a head or capsid containing genetic material and usually a tail and tail fibers (not seen here) which the phage uses to attach to a specific receptor sites on the bacterium. Once attached to the cell surface, genetic material is injected into the bacterium, taking over the bacterium's own cellular machinery and forcing it to produce more copies of the bacteriophage. When sufficient numbers have been produced the phages escape from the bacterium by cellular lysis, killing the bacterium in the process. The whole process takes about 15-20 minutes. SEM X10,000. « less
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