Koch's postulates (1884): microbe isolated from all diseased; grown in pure culture; reintroduced → disease; re-isolated. Molecular Koch's postulates (Falkow 1988): virulence gene complementation.
Koch's postulates (1884): microbe isolated from all diseased; grown in pure culture; reintroduced → disease; re-isolated. Molecular Koch's postulates (Falkow 1988): virulence gene complementation.