Table 2.

Point mutations in the Ac-FPm fp25k gene after passaging

P, Passage number, m, virus isolate number.

Mutants*	No. point mutations	Mutations leading to reversion of TTAA sites	Other mutations
Ac-FPmP12-m2	1	C24T,
Ac-FPmP12-m6	3	C24T, G204A, C237A
Ac-FPmP12-m9	2	C24T, G204A
Ac-FPmP32-m7	3	C24T, C237T	G214A
Ac-FPmP32-m20	2	C237T	G214A
Ac-FPmP32-m21	2	C237T	G214A

*Individual virus isolates were plaque purified from passages 12 and 32 of Ac-FPm. Mutations are indicated.