TABLE 2.

Tissue distribution of EIAV gag DNA by PCR

Horse no.	Clinical status	Virus strain	PCR (nested PCR) resulta
			PBMC	Lung	Spleen	Node	Bone marrow	Liver
2084	Acute clinical	Wyo	+	+	+	+	+	+
2079	Acute clinical	WSU5	+	+	+	+	+	+
2085	Chronic clinical	Wyo	+	+	+	+	+	+
524	Subclinical	Wyo	+	+	+	+	+	+
489	Subclinical	WSU5	− (−)	± (+)	+	− (+)	− (+)	NT
498	Subclinical	WSU5	− (−)	+	+	+	+	NT

^a+, positive PCR result detected in ethidium bromide-stained agarose gels; −, negative result; ±, positive result weak and inconsistent; NT, not tested (tissue extracts inhibitory to PCR).