TABLE 2.

Statistics of the screen

Stage	No. for screen run:								Total
	1	2	3	4	5	6	7	8
Colonies screened	32,000	8,900	34,400	32,000	34,642	6,983	42,972	7,264	∼200,000
Streaked at 42°C	676	307	960	889	180	58	344	63	3,477
UV/spot test	156	57	345	321	32	16	39	20	986
UVsusceptiblea	10	3	9	17	7	4	22	6	78
Transduced into AB1157 background	19	15	1	1	6	4	11	6	63
UV-resistant sequenced	10	2	0	0	1	0	0	0	13
UV-susceptible sequenced	10	2	10	17	7	2	10	2	60

^aEven slightly.