Table 4.

Production of phage by electroporation of cDNA plasmids with pac sequence of L in segment M

Comment	M+Mpac	M+Lpac	L wt	L mut	S	Plaques
Normal	+		+		+	>1000
M has Lpac		+	+		+	1 or 0
Mutant L and M having Lpac		+		+	+	>1000
Mutant L and Normal M	+			+	+	>1000