| Code | Strain |
| aaa | Analbuminaemic (Sprague-Dawley derived) |
| aah | A/He |
| aap | Alpk:APfSD |
| abi | Ab × IF |
| aci | ACI |
| agu | AGUS |
| aif | A × IF |
| ain | ACI/n |
| ajj | A/JJms |
| akr | AKR |
| aks | AKR/J |
| alb | albino |
| amm | A |
| aps | AP Alderly Park |
| asd | Sprague-Dawley albino |
| asp | ASH-CS1 |
| asw | Swiss-Webster albino |
| aug | August |
| ays | AE/WffC3Hf/Nctr × YS/WffC3Hf/Nctr |
| b46 | BR 46 |
| b62 | Monohybrid cross offspring of B6CF1 (C57BL/6 × BALB/c) |
| b6a | B6AKF1 |
| b6b | (B6C3F1 × B6C3 background, brachymorphic) inter se = B6C3F2 brachymorphic |
| b6c | B6C3F1 |
| b6n | (B6C3F1 × B6C3 background, brachymorphic) inter se = B6C3F2 phenotypically normal |
| baa | Black a/a (YS × VY)F1 |
| baj | BALB/cJ |
| bal | BALB/c |
| bbb | Bush babies [Galago crassicaudatus] |
| bbl | Bethesda black |
| bce | BALB/cHe |
| bcn | BALB/cStCrlfC3Hf/Nctr |
| bd1 | BDF1 |
| bd2 | BD II |
| bd9 | BD IX |
| bdf | BD VI |
| bdj | Crj:BDF1 |
| bdr | BD |
| beg | Beagle |
| bfm | Buffalo-Mai |
| bld | BALB/cLacDp |
| buf | Buffalo |
| c17 | C17 |
| c3c | C3H/AnCum |
| c3d | C3Hf/Dp |
| c3e | C3HeB/Fe |
| c3h | C3H (MTV+) |
| c3j | C3H/HeJ (MTV+) |
| c3l | C3H (C3H/Anl) (Anl 70) |
| c3p | C3HeB |
| c3s | C3H/St (MTV+) |
| c3v | C3H/HeN-MTV—/Nctr (MTV—) |
| c56 | C57BL/6J |
| c5c | C57BL/10ScSn |
| c5j | C57BL/10J |
| c5l | C57BL |
| c5n | C57BL/6N |
| c5v | C57BL/BVI |
| c6s | C57BL/6CrSlc |
| c7b | (C57BL/6 × BALB/c)F1 |
| c7l | C57L |
| cb6 | C57BL/6 |
| cb7 | CBA × C57BL |
| cba | CBA |
| cbc | CBA/Cb/Se |
| cbh | CBA/H-T6 |
| cbj | C3HeB/FeJ |
| cbl | C57BL |
| cbn | C57BL/6JfC3Hf/Nctr × BALB/cStCrlfC3Hf/Nctr inter se |
| cbo | C.B. hooded |
| cbr | CB |
| cbs | Cb/Sc |
| cbt | Chester Beatty albino |
| cd1 | Charles River CD1 |
| cdf | CDF1 |
| cdj | Crj: CD-1 (ICR) |
| cdr | Charles River CD (Sprague-Dawley) |
| cen | C3H/HeN |
| cf1 | CF-1 |
| cfe | CFE |
| cff | C57BL/6JfC3Hf/Nctr × BALB/cStCrlfC3Hf/Nctr |
| cfi | C3H/FIB |
| cfl | CFLP |
| cfn | CFN |
| cfr | CF |
| che | C57BL/He |
| chf | C3HfB |
| chg | C3H/He germfree |
| chh | C3H/He (MTV+) |
| chi | CD-1 HaM/ICR |
| chj | C3HeB/Jax |
| cj5 | C57BL/6NCrj |
| chm | Charles River |
| cif | (C57 × IF)F1 |
| clw | Colworth (Wistar derived) |
| crf | (C3H × RIII)F1 (MTV+) |
| crw | Charles River Crl:COBS(WI)BR |
| csa | Charles River albino |
| csb | CSb |
| csc | C57L/He × 129/Rr × C3HeB/De × SWR/Ly |
| ctn | CTM |
| cva | BALB/cStCrlfC3Hf/Nctr × VY/WffC3Hf/Nctr-(A/A) |
| cvy | BALB/cStCrlfC3Hf/Nctr × VY/WffC3Hf/Nctr-(Avy/A) |
| cwf | Carworth Farms |
| cws | CFW |
| cym | Cynomolgus [Macaca fascicularis] |
| d2b | D2B6F1 mice |
| dah | DA (from Hannover) |
| dba | DBA/2 |
| dbx | DBA |
| ddd | DDD |
| ddn | ddNi |
| dds | Slc:ddY |
| ddx | dd |
| ddy | DDY |
| don | Donryu |
| esd | Eastern Sprague-Dawley |
| f34 | Fischer 344 |
| f3d | F344/DuCrj |
| f3j | Fischer 344/Jcl |
| f3l | Fischer 344/LATI |
| f3t | Fischer 344/Tox |
| fdr | FDRL |
| fds | Food and Drug Research Laboratories stock rats |
| fis | Fischer |
| fmf | Fischer 344/Mai fBR |
| hew | Hebrew University |
| hic | Ha/ICR |
| hra | HRA/Skh (hairless) |
| hrl | Harlan |
| hza | Holtzman albino (Sprague-Dawley derived) |
| ic3 | ICRC × C3H (Jax) |
| ici | ICI |
| icm | ICR |
| icr | ICR/Jcl |
| ifc | IF × C57 |
| ifm | IF |
| lca | LACA |
| leb | Long-Evans BLU:(LE) |
| lee | Leeds albino |
| lev | Long-Evans |
| lew | Lewis |
| lwj | LEW/Crj (Lewis) |
| mar | Marshall |
| mgr | Mongrel |
| mrc | MRC |
| mrw | MRC-Wistar |
| nbl | NBL/Cr |
| nbr | NBR |
| nbw | NZBW (hooded black and white strain) |
| nmb | Bor:NMRI, SPF-bred NMRI |
| nmh | Han:NMRI |
| nmo | Hoe:NMRKf (SPF71) |
| nmr | NMRI |
| non | Non-inbred |
| nra | Norwegian albino |
| nss | Not specified |
| nzb | NZO/BlGd |
| nzd | NZR/Gd |
| of1 | OF1 |
| ofs | OFA (Sprague-Dawley derived) |
| osm | Osborne-Mendel |
| por | MRC Porton (Wistar derived) |
| pva | Lean pseudoagouti Avy/a |
| r3m | RIII (MTV+) |
| rfm | RF |
| rhe | Rhesus [Macaca mulatta] |
| scd | Swiss CD-1 |
| scp | Cpb:Swiss random |
| sda | Sprague-Dawley |
| sdf | SD × F344 |
| sdi | IcoIbm:OFA (Sprague-Dawley derived) |
| sdj | SD(Crj:CD) Sprague-Dawley |
| sdz | Sandoz |
| sen | SENCAR |
| shc | Sherman COBS |
| she | Sherman |
| shj | SHR/Crj |
| shr | Swiss/H/Riop |
| sic | Swiss/ICR |
| sjd | Jcl:SD |
| sjs | SJL/J |
| sls | Slc-Wistar |
| smb | Syrian, MB strain |
| smw | Sas:MRC(WI)BR |
| ssa | S strain albino |
| ssk | SK&F Swiss |
| sss | Sprague-Dawley Spartan |
| stm | ST/a |
| swa | Swiss albino |
| swi | Swiss |
| swn | Swiss/NIH (Japan) |
| swr | SWR |
| sww | Swiss Webster |
| syg | Syrian Golden |
| tf1 | Tuck |
| the | Theiller’s Original |
| tmm | TM |
| tst | Tree shrew [Tupaia glis] |
| umh | UM-HET3 |
| vms | VM |
| wag | WAG |
| wal | Wistar albino |
| whb | Han-Ibm Wistar |
| wi2 | Wistar II |
| wid | Wistar/FDRL |
| wil | Wistar/LAC-P |
| win | Wistar/NIN |
| wio | Wistar-OSU |
| wis | Wistar |
| wky | WKY/NCrj (Wistar) |
| wmf | Wistar-Mai-Furth |
| wsb | BOR:WISW (Wistar) |
| wsh | Han:WIST |
| wsj | Crj:Wistar |
| wsk | SK&F Wistar |
| wsr | Wistar-random |
| wsw | Wilmslow Wistar |
| wws | Wistar W.74 |
| xvi | XVII/G |
| yva | Obese yellow Avy/a |