Kaspareit-Rittinghausen J, Deerberg F, Sommer R
Central Institute for Laboratory Animal Breeding, Department of Pathology, Hannover, FRG.
Lab Anim. 1989 Oct;23(4):337-9. doi: 10.1258/002367789780746051.
The histopathological features of 2 atypical epithelial thymomas found in female Han: SPRD rats are described. The neoplasms were characterized by well-circumscribed epithelial nests and islands. One tumour showed local invasion in lymph vessels.