TABLE 1.

Characterization of virus strains

Strain	DNA,a gB type	Epitopeb, gB type	Epitope,c gH type	gBd	IUe	IU/gB ratio
AD169	II	AD169	AD169	1.0	1.0	1.00
Towne	I	Towne	Towne	7.8	23.8	3.05
P1AN	III	AD169	AD169	1.4	0.5	0.36
236	IV	AD169	AD169	1.4	0.2	0.14
210	I	Towne	Towne	1.4	0.8	0.57
P143	I	Towne	Towne	1.8	0.9	0.50
R2O	I	Towne	Towne	1.8	4.1	2.28
244	I	Towne	AD169	2.8	1.3	0.46
F3I	I	Towne	Towne	1.0	0.1	0.10
209	II	AD169	Towne	3.5	2.0	0.57
252	III	AD169	AD169	0.7	0.12	0.17

^agB genotypes (types I to IV) are as defined by Chou on basis of restriction enzyme pattern of gB (16). 

^bVirus types (AD169-like or Towne-like) were defined on basis of the strain-specific epitope present in the amino terminus of gB. 

^cVirus types (AD169-like or Towne-like) were defined on basis of the strain-specific epitope present in the amino terminus of gH. 

^dThe relative concentration of gB is shown. The concentration of AD169 was arbitrarily set at 1. 

^eThe IU values relative to strain AD169 are shown. The IU was measured as described in Materials and Methods.