It was found that, for a bacteriophage λ that can grow well in one strain of Escherichia coli, for example E. coli C, when grown in another strain, for example E. coli K, its yields can drop significantly, by as much as 3-5 orders of magnitude.
Atoparon que un bacteriófago λ que pode crecer ben nunha cepa de Escherichia coli, por exemplo E. coli C, non crecía tan ben noutra cepa, por exemplo E. coli K, na cal o seu rendemento caía significativamente de 3 a 5 ordes de magnitude.