Wirtsbereichsverhalten der Bakteriophagen T3 und T7 an Escherichia coli K12‐Stämmen

The closely related phages T3 and T7 exhibit different growth patterns on Escherichia coli W host cells (E. coli K12 derivatives). T7 grows normally while T3 does not adsorb. T3hw mutants displaying a T7-like host range were isolated and described.