88 GENETIC STOCKS AND BREEDING METHODS 



Table 27 — Continued 



Xame or 

 Symbol Synonym(s) 



BALB/Gw Ba, B alb, 



Bagg albino 



BALB'MySp B alb, Bagg 

 albino 



BALBf Si 



BALB/ C/ C + 



BALB/c- CFU 

 CFu 



BAMA 



BD Bd 



BDP 



BL 



Bagg L, 

 BALB/R 



BRS BrS, Br-S, 



Br-s 



BRSUNT BrSunt 



BRVR 



BSVS 



BUA 



Remarks 



widely distributed especially via Andervont. charac: low incidence 

 of mammary tumors, but high incidence when milk agent is intro- 

 duced. Some ovarian and adrenal tumors. Susceptible to chronic 

 pneumonia. Primary pulmonary tumors, 26% in $$, 29% in 6\?- 

 maintained by: Anl, Crgl, De, Di, Gif, Go, Jax, Jb, Ka, Lab, Mc, 

 Ms, N, Pi, Rl, Rr, S, Sp, We. 



inbr (Gw) : ? + 62. genet: bbcc. origin: see BALB/c. MacDowell 

 to Gowen in 1932 at F 27 . charac: low resistance to Salmonella typhi- 

 murium. Radiation susceptible, maintained by: Gw. 

 inbr (Sp): 47. genet: bbcc. origin: see BALB/c. Murray to Simp- 

 son in 1948 at F 23 . charac: mammary tumor, pulmonary tumor. 

 maintained by: Sp. 



inbr (Sp): ? + 20. genet: bbcc. origin: from BALB born by 

 cesarean section and fostered on strain BD. Murray to Simpson in 

 1948. charac: low mammary tumor, some pulmonary tumor. 

 maintained by: Sp. 



inbr (Sp) : 47. genet: bbcc. origin: from BALB/cAn fostered on 

 C 3 H. Andervont to Simpson in 1952 at F 3S . charac: mammary 

 tumor, pulmonary tumor, maintained by: Sp. 



inbr (Rr): N12. genet: bb + cFu + . origin: from BALB/cSnRr. 

 charac: 95% penetrance of Fu. maintained by: Rr. 



inbr (Sp) : ? + 18. genet: cc. origin: derivative of A ? x MA q*. 

 charac: low mammary tumor, maintained by: Sp. 



inbr (Sp): ? + 16. genet: aa. origin: Murray, DBA x C57BL, 

 N8 to C57BL, then b x s. Warner to Simpson 1950. (In view of 

 the origin of this strain, it should be classed as a subline of C57BL.) 

 charac: low mammary tumor, maintained by: Sp. 



inbr (Jax): 38 + . genet: aabbsejdsepprdrd. origin: Gates, inbred 

 since 1926. charac: frequent mammary tumors, ovaries hemorrhagic 

 and necrotic, nervous behavior, maintained by: Jax. 



inbr (De): 68. genet: aabbcc. origin: Lynch, from Bagg stock via 

 Strong, maintained at Rockefeller Inst, as distinct strain since 1921. 

 Some of original animals obtained from Strong carried agouti. This 

 stock from Lynch in 1951, at F 46 . charac: low mammary tumor; 

 some pulmonary tumors in old mice, maintained by: De. 



inbr (St): 55. genet: aabb. origin: Strong, from a branch of NH 

 treated for eight or more generations with methylcholanthrene. 

 charac: gastric lesions, adiposity, maintained by: St. 



inbr (N): 64. genet: aabb. origin: Strong, a branch of BRS con- 

 tinued without further methylcholanthrene treatment (UNT = un- 

 treated), charac: gastric lesions, adiposity. maintained by: N, St. 



inbr (Kp) : 57. genet: cc. origin: from H. A. Schneider, Rocke- 

 feller Inst., at F 57 in 1959. charac: susceptible to bacteria and to 

 Arbor "B" viruses, maintained by: Kp. 



inbr (Kp): 57. genet: cc. origin: same as BRVR, at F 56 in 1959. 

 charac: susceptible to Salmonella and viruses, particularly hepatitis. 

 maintained by: Kp. 



inbr (Wi) : 36. genet: albino, origin: albinos of unknown pedigree 

 at Brown Univ. maintained by random breeding for unknown length 



