WA

Inbr. F66+.

Colour: Albino,

Genet. a, c, h.

Origin: St Thomas's Hospital, from outbred Wistar stock, to Laboratory Animals Centre in 1964 at F43 (Festing and Blackmore 1971). To Ola in 1983.

---

Characteristics

Mean life-span of animals maintained in Specific Pathogen Free conditions 749_40 days in females and 645_30 days in males. High incidence of polycystic nephrosis (Festing and Blackmore 1971). Haematological characters described by Lovell et al (1981); low RBC (2/7), Hb (2/7), PCV (2/7), MCHC (1/7), eosinophils (1/7), high lymphocytes (7/7).

---

Festing M. F. W. and Blackmore D. K. (1971) Life span of specified-pathogen-free (MRC category 4) mice and rats. Lab. Anim. 5, 179-192.

Lovell D. P., Archer R. K., Riley J., and Morgan R. K. (1981) Variation in haematological parameters among inbred strains. Lab. Anim. 15, 243-249.

---

INBRED STRAINS OF RATS
Updated 9 Apr. 1998
Michael FW Festing
MRC Toxicology Unit, Hodgkin Building,
University of Leicester, UK