Table 4 Mouse bioassay results for white-tailed deer fetal tissues from CWD-positive dams. Cervidized (TgCerPrP−E2265037+/−) mice were intraperitoneally (IP) inoculated with fetal brain (fetuses 5–12 A and 7–6 A) or fetal thymus (6-1B) samples. Terminal mouse brain and spleen tissues were tested in conventional RT-QuIC for amyloid seeding activity. Mock inoculated mice remained free of clinical signs throughout, and tested CWD-negative upon terminal collections in all cohorts. DPI = days post inoculation. # pos/total mice = number CWD-positive/total number inoculated.

From: Vertical transmission of chronic wasting disease in free-ranging white-tailed deer populations

Location

Fetal tissues in bioassay

No. pos/total mice

DPI

Arkansas

5–12 A Brain

1/6

213 ± 89.5

Tennessee

6-1B Thymus

6/8

325 ± 44.3

West Virginia

7–6 A Brain

5/5

270 ± 26.2

Negatives

Brain

0/6

Thymus

0/8