GENETIC STRAINS AND STOCKS 87 



Table 27 — Continued 



Name or 

 Symbol 



Synonym(s) 



Remarks 



AfB 



Af/MySp 



A/Gr, 



(RIII^/Pu 



A/Fa- + c ABG 

 A/Be-CRe REB 



AK/n • Ak-n 



AKR AK, AKm, 



Afb, R.I.L., 

 Rockefeller 

 Inst. Leuke- 



AKR-//-2 a AKR.K 

 AKR-//-2 m AKR.M 

 AU 



A 2 G 



BALB/c BalbC, C 



inbr (Gif ) : 32. genet: aabbcc. origin: from Netherlands Cancer 

 Inst., a litter of A taken by cesarean section and fostered on C57BL. 

 charac: no mammary tumor, since no MTI. Low percentage of 

 pulmonary tumors, maintained by: Gif. 



inbr (Sp) : ? + 16. genet: aabbcc. origin: Murray, from A taken 

 by cesarean section and fostered on strain BD. charac : low mammary 

 tumor, high pulmonary tumor, renal disease, maintained by: Sp. 



inbr (Mr): F17 since fostering, genet: aabbcc. origin: one litter of 

 A/Gr mice fostered on RIII;B/Pu, May 1952, without suckling own 

 mother, charac: no mammary tumors, being free of milk factor, 

 otherwise same as strain A. maintained by: Mr. 



inbr (Fa) : N16. genet: aabb + c. charac: c segregates, maintained 

 by: Fa. 



inbr (Be): 20 + . genet: aabbReRe, and either cc or +c origin: from 

 A/Fa circa 1948 by addition of C and Re through five generations of 

 backcrossing to A/Fa; then b x s with forced segregation at the c 

 locus, the parents being always cc $ x +c $. maintained by: Be. 



inbr (Sn) : G12F15. maintained by: Kl, Sn. 



inbr (Sn) : G12F16. maintained by: Kl, Sn. 



inbr (Sn) : G12F18G4F1. maintained by: Kl, Sn. 



inbr (Kn): 53. genet: cc. origin: Dr. Agnes Bluhm, Kaiser Wil- 

 helm Inst., circa 1930; b x s until 1943. Breeding history disrupted 

 by war. This stock from Prof. Kaufmann, Univ. Marburg, in 1950. 

 Inbreeding continued, charac: no mammary tumors or sarcomas 

 except after radiation treatment; low rate of pulmonary tumors and 

 lymphomas, maintained by: Kn. 



inbr (Ka): 20+ by Gs + F9. genet: aacc. origin: Furth, to Gross 

 Nov. 1945; Gross to Kaplan, 1956, and Ontario Cancer Inst., 1957. 

 charac: high leukemia; source of virus that induces leukemia in 

 C3H/BiGs mice, maintained by: Gs, Ka, Oci. 



inbr (N) : 64. genet: aacc. H-2 k . origin: carried by Furth as 

 high-leukemia strain from 1928 to 1936. Then random bred at 

 Rockefeller Inst, for several generations, followed by F 9 by Mrs. 

 Rhoads and 30+ by C. Lynch, charac: high leukemia, main- 

 tained by: Am, Gif, Jax, Jb, Lab, Lhm, Lw, Ms, Mv, N, Pa, Rd, 

 Rho, S, Sp, We. 



inbr (Sn): G12F11G4F7. 



inbr (Sn): G12F17. 



inbr (Ss) : 27. genet: aaUU. origin: Fisher; Medawar (London) 



to Silvers in 1957 at F 23 . charac: $? do not reject 6*c? isografts. 



MAINTAINED BY: Ss. 



inbr (Gif): 47. genet: albino, origin: cross of A with noninbred 

 albino, charac: useful for endocrine work especially gonadotrophin 

 assay (Lab). Can carry Salmonella without showing signs of it (G). 

 Good reproduction (Gif). maintained by: G, Gif, Lab, Mr. 

 inbr (Rr): 98. genet: bbcc. H-2 d . origin: albino stock acquired 

 by Bagg in 1906, to Little, to MacDowell in 1922; b x s inbreeding 

 started by MacDowell in 1923. Prior inbreeding uncertain. Trans- 

 ferred from MacDowell to Snell in 1932 at F 26 and subsequently 



