Table 4. Viral RNA loads in lymph nodes.

	i.n. high dose				i.n. low dose				i.t.				i.a.
LN	5	7	11	14	5	7	11	14	5	7	11	14	5	7	11	14
Sub.	-	(+)	(+)	(+)	-	-	-	-	-	(+)	(+)	(+)	-	(+)	(+)	(+)
Axil.	-	-	-	(+)	(+)	(+)	-	-	+	-	-	-	-	-	(+)	(+)
Hilar	-	(+)	(+)	(+)	(+)	-	-	-	++	++	+	(+)	-	+	(+)	(+)
Mesent.	(+)	(+)	(+)	(+)	(+)	(+)	(+)	-	(+)	(+)	-	(+)	-	+	(+)	(+)

Load is expressed as M gene RNA copies per mg tissue. Values of ≤ 10³ /mg were considered not significantly above background. +++ > 10⁶; ++10⁵–10⁶; + 10⁴–10⁵; (+) 10³–10⁴;—<10³ copies/mg. LN, lymph node; Sub. Submandibular; Axil. Axillary; Mesent. Mesenteric.