Table 3.
Tissues tested by polymerase chain reaction for bovine immunodeficiency virus proviral DNA for 16 Holstein cows with endemic infections
| Animal number | Brain—anatomic regions |
Lymphoid organs |
||||
|---|---|---|---|---|---|---|
| Positive | Negative | Positive | Negative | |||
| 1 | (0/0)a | +(2/3) | Spleen, Hemal LN | Mesenteric LN | ||
| 2 | −(0/2) | Brainstem, cerebellar peduncle | −(0/3) | Spleen, mesenteric LN, hemal LN | ||
| 3 | (0/0) | −(0/2) | Spleen, hemal LN | |||
| 4 | −(0/2) | Brainstem, cerebellar peduncle | −(0/2) | Spleen, hemal LN | ||
| 5 | −(0/2) | Brainstem, cerebellar peduncle | (0/0) | |||
| 6 | +(1/2) | Medial gen. body | Hippocampus, brain (unspecified site) | +(2/3) | Thymus, pre-scapular LN | Spleen |
| 7 | +(2/3) | Brainstem, hippocampus | −(0/2) | Spleen, mesenteric LN | ||
| 8 | −(0/4) | Brainstem, cerebral cortex, hippocampus medial gen. body | −(0/1) | Spleen | ||
| 9 | +(3/3) | Brainstem, cerebral cortex, hippocampus | −(0/2) | Spleen, mesenteric LN | ||
| 10 | +(1/1) | Cerebral cortex | −(0/2) | Mesenteric LN, hemal LN | ||
| 11 | −(0/3) | Brainstem, cerebral cortex, medial gen. body | +(2/5) | Thymus, hemal LN | Spleen, mesenteric LN, pre-scapular LN | |
| 12 | +(2/4) | Brainstem, hippocampusb | Cerebral cortex, medial gen. body | +(2/2) | Spleen, mesenteric LN | |
| 13 | +(1/2) | Medial gen. bodyb | Brainstem | +(2/4) | Spleen, mesenteric LNb | Pre-scapular LN, hemal LN |
| 14 | +(1/3) | Brainstemb | Cerebral cortex, hippocampus | −(0/4) | Spleen, mesenteric LN, pre-scapular LN, hemal LN | |
| 15 | +(2/3) | Medial gen. body, brain (unspecified site) | Brainstem | −(0/3) | Spleen, mesenteric LN, pre-scapular LN | |
| 16 | +(3/3) | Cerebral cortex, hippocampus, medial gen. body | +(4/4) | Thymus, spleen, mesenteric LN, hemal LN | ||
a
()=Positive/total brain regions or lymphoid organs tested.
b
Indeterminate.