[1] Gram-negative bacteria serve as the natural host, with transmission achieved through passive diffusion.
The tail has six long terminal fibers, six short spikes, and a small base plate.
The virus attaches to the host cell using its terminal fibers, and uses viral exolysin to degrade the cell wall enough to eject the viral DNA into the host cytoplasm via contraction of its tail sheath.
[2] The ICTV's first report (1971) included the genus T-even phages, unassigned to an order, family, or subfamily.
[4] The genus was renamed in 1976 to T-even phage group, moved into the newly created family Myoviridae in 1981.