Table 2. Mutation loci from Len-ca.

Ts site	Wt A/PR8	Len-ca	Ts phenotype	Att phenotype
PB1:265	K	N	+	+
591	V	I	+	+
PB2:478	V	L	+	+
PA:28	L	P	--	--
341	V	L	--	--