Fig. 1.

Variation in median survival of C57BL/6 mice. Median lifespan of control, untreated male C57BL/6 mice from published studies is presented (from: 1 Talan and Ingram 1985; 2 Harrison and Archer 1987; 3 Goodrick et al. 1990 (three independent cohorts); 4 Bronson and Lipman 1991; 5 Blackwell et al. 1995; 6 Pugh et al. 1999; 7 Turturro et al. 1999; 8 Forster et al. 2003; and 9 Ikeno et al. 2005)