Table 2. Critical concentration of A₂ to induce host lysis.

nd, Not determined.

Level of induction (μM IPTG)*	Lysis	A2 molecules per cell	Time of analysis (min)
0	−	nd	nd
12.5	−	nd	nd
25	−	2.2×102	60
50	−	2.3×102	60
100	+	3.6×102	15
100	+	4.9×102	30
1000	+	1.4×103	15

^*pZE12-A₂.