From: Ovine progressive pneumonia provirus levels are unaffected by the prion 171R allele in an Idaho sheep flock
OPPV Provirus Status
% OPPV
PRNP genotype
negative
positive
171 QQ
36
64
64.0
171 QR
61
118
65.9
171 RR
35
44
55.7
143 HH
103
176
63.1
143 HR
26
45
63.4