TABLE 2.

Chimeric capsid protein constructs^a

Virus	Domain exchanged	Viable virus recovery
U/NE	NADC E region	Yes
U/KE	KCD E region	Yes
U/CE	CFI E region	No
U/NEL	NADC N terminus of E region URB C terminus of E region	Yes
U/NER	URB N terminus of E region NADC C terminus of E region	Yes
U/KEL	KCD N terminus of E region URB C terminus of E region	No
U/KER	URB N terminus of E region KCD C terminus of E region	No
U/CEL	CFI N terminus of E region URB C terminus of E region	Yes
U/CER	URB N terminus of E region CFI C terminus of E region	No
U/NCDE	NADC C, D, and E regions	Yes

^aThe E region includes amino acid residues 426 through 521; the N terminus of the E region includes amino acid residues 426 through 470; the C terminus of the E region includes amino acid residues 471 through 521; the C, D, and E regions include amino acid residues 397 through 521. Subscripts L and R in virus names represent left and right, respectively.