Tailed-viruses are lytic or temperate. Lytic infection results in production of progeny
viruses and destruction of the host. Phages adsorb tail-first to specific protein or
lipoprotein host cell receptors, which are located on the outer cell surface. In a few cases,
not represented by the genera described here, the primary adsorption sites are capsules,
flagella, or pili. Upon adsorption to the outside of the cell, virions undergo complex and
often poorly understood rearrangements which release the DNA to enter the cell through