TABLE 2.

Immunity or exclusion analysis of Stx2-encoding phages, phage λ, and phage H19B

Recipient strain	Spot lysis with indicated phage lysatea
	φ933W	φ10	φ2	φ3	φ14	φ16	φ19	φλ	φH19B
MC1000(933W)	−	−	+	+	+	+	+	+	+
MC1000(φ10)	−	−	+	+	+	+	+	+	+
MC1000(φ2)	+	+	−	−	+	+	+	+	+
MC1000(φ3)	+	+	−	−	+	+	+	+	+
MC1000(φ14)	+	+	+	+	−	+	+	+	+
MC1000(φ16)	+	+	+	+	+	−	+	+	+
MC1000(φ19)	+	+	+	+	+	+	−	+	+
MC1000(λcI857)	+	+	+	+	+	+	+	−	+
MC1000(H19B)	+	+	+	+	+	+	+	+	−

^aLawns of the indicated strains were tested for lysis by lysates containing the indicated phage. +, a spot of lysis on the lawn corresponding to the site of placement of a 10-μl drop of lysate; −, no lysis.