Arthritis scores for (DA × LEW.1AV1)F2 rats in relation to combinations of genotypes at the two major arthritis loci defined by the markers D4Mgh10 (Oia2) and D10Mgh1 (Oia3). Bars indicate the median arthritis severity of affected animals in each group.
* Percent animals with arthritis (scores, 1–92).
† Markers: D4Mgh10 (Oia2) and D10Mgh1 (Oia3). Genotypes: DD = DA homozygous; LL = LEW.1AV1 homozygous; and DL = heterozygous animals.