The T7 bacteriophage is a prototype of the Podoviridae family, characterized by a non-contractile short tail and an icosahedral head. Unlike filamentous phages like M13, T7 is a lytic bacteriophage containing a linear double-stranded DNA (dsDNA phage) genome. It is renowned for its highly efficient gene expression machinery and robust stability, making it a powerful tool in modern biotechnology.
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