Table 3.

Positions of base substitutions in hprt mutants of RAW264.7 cells stimulated to produce NO

Position	Mutation	Position	Mutation
Spontaneous mutation		IFN-γ, 23 days
1	AT to GC	1	AT to TA
1	AT to GC	82	AT to CG
1	AT to TA	84	AT to CG
74	GC to CG	133	AT to TA
88	GC to TA	145	GC to AT
104	AT to CG	160	AT to TA
119	GC to TA	220	AT to CG
136	AT to CG	269	AT to GC
229	GC to TA	380	GC to TA
260	GC to CG	397	GC to TA
370	AT to CG	407	AT to CG
407	AT to CG	533	AT to GC
440	AT to GC	542	AT to GC
464	GC to CG	547	AT to TA
569	GC to AT	563	AT to TA
580	GC to AT	594	GC to TA
635	GC to AT	614	AT to CG
647	AT to GC
647	AT to CG
LPS + IFN-γ, 4 days		LPS + IFN-γ + NMA, 4 days
1	AT to TA	1	AT to TA
23	AT to CG	194	AT to CG
65	AT to CG	473	AT to CG
97	GC to TA	473	AT to CG
119	GC to CG	530	AT to GC
299	AT to CG	539	GC to AT
419	GC to TA
569	GC to CG
606	GC to CG