Table 2. Subtypes of unique recombinant viruses shown in Figure 2.

Virusesa	Specific gene region
	P17	C2V3C3	Gp41
n = 2	D	F1	F1
	G	A	A
	?	H	A
	A	H	G
	A	G	G
	A	A	G
n = 2	A	–	G
	?	–	G
	A	H	H
	A	A	?
	?	?	?
	C	C	?
	A	–	?
	F1	A	?
	A	?	A
n = 3	A	?	A
n = 2	J	?	?

^aExcept where noted, each row represents a single virus.