Figure 3.

Phage recovered from E. coli NM679 spotted on E. coli NM1049(DE3) (r⁺m⁺s⁺), top row, or on E. coli NM1261(DE3) (r⁺m⁺s⁻), bottom row). From left to right are cells transformed with pBIO2, pJFMS or pMSFusion. Phage dilutions are 10⁻¹ to 10⁻⁴ as shown.