TABLE 1.

Sequential virus isolation from PBMC and lymph nodes of macaques inoculated with SIVlhoest isolates

Isolation of virus at indicated wk postinoculationa
Isolate source	Macaque	1	2	4	8	12	16	20	24	28	32	36	40
PBMC	622	++	++	++	+	+	++	+	−	−	+	+	+
	623	++	++	++	−	−	++	−	−	−	−	+	−
	626	++	++	++	+	−	+−	−	−	−	−	−	−
	627	++	++	++	+	−	++	+	+	+	−	+	−
Spleen	633	++	++	++	+	+	++	−	+	+	−	+	+
	634	++	++	++	+	+	++	+	+	+	+	−	+
	635	++	++	++	+	+	++	+	+	+	+	+	+
	636	++	++	++	+	+	++	−	−	−	−	−	+

^aVirus isolation from PBMC and lymph nodes as detected by RT activity in culture supernatant within a 6-week period of coculture is indicated by a +, and inability to isolate virus is indicated by a −.