Table 1.
Summary information for control female rats from 18 long-term carcinogenicity bioassays conducted by the U.S. National Toxicology Program (NTP), matched on laboratory (Battelle Columbus), diet (NTP-2000), and route (gavage).
| Strain | Vehicle | Technical Report Number | Year Study Started | Number of Rats | Mean 1-year Body Weight (grams) | Percent (%) Surviving to End of Study | Mean Life Span (days) |
|---|---|---|---|---|---|---|---|
| Sprague Dawley | corn oil | 520 | 1998 | 53 | 327 | 28 | 567 |
| Sprague Dawley | corn oil | 521 | 1998 | 53 | 329 | 47 | 637 |
| Sprague Dawley | corn oil | 525 | 1999 | 53 | 317 | 47 | 655 |
| Sprague Dawley | corn oil | 526 | 1998 | 53 | 326 | 30 | 616 |
| Sprague Dawley | corn oil | 529 | 1998 | 53 | 341 | 45 | 641 |
| Sprague Dawley | corn oil | 530 | 1998 | 53 | 341 | 42 | 629 |
| Sprague Dawley | corn oil | 531 | 1999 | 53 | 345 | 51 | 656 |
| Sprague Dawley | corn oil | 558 | 2003 | 50 | 323 | 50 | 652 |
| Sprague Dawley | corn oil | 559 | 2004 | 52 | 329 | 40 | 616 |
| Fischer 344/N | corn oil | 551 | 2002 | 50 | 278 | 66 | 699 |
| Fischer 344/N | corn oil | 557 | 2002 | 50 | 270 | 62 | 668 |
| Fischer 344/N | corn oil | 563 | 2003 | 50 | 281 | 62 | 682 |
| Fischer 344/N | corn oil | 571 | 2004 | 50 | 286 | 68 | 683 |
| Fischer 344/N | water | 497 | 1995 | 50 | 255 | 76 | 710 |
| Fischer 344/N | water | 512 | 1997 | 50 | 259 | 60 | 672 |
| Fischer 344/N | water | 541 | 2001 | 50 | 293 | 76 | 703 |
| Fischer 344/N | water | 554 | 2002 | 50 | 283 | 62 | 679 |
| Fischer 344/N | water | 567 | 2004 | 50 | 284 | 72 | 700 |