This
method
is
used
for
typing
bacteria
by
testing
the
susceptibility
of
the
culture
to
lysis
by
each
of
a
set
of
type
specific
lytic
bacteriophages.
The
phage
type
of
the
culture
is
identified
based
on
its
pattern
of
susceptibility
to
the
different
phage
strains.
Phage
typing
allows
subdivision
of
a
serological
entity,
as
in
the
Salmonella
typhi,
which
is
divisible
into
more
than
100
different
phage
types.
