Figure 1.

Strain distribution pattern of mean survival time of inbred mouse strains exposed to chorine. Inbred mouse strains were selected based on the Mouse Phenome Database priority Tier 1. Sixteen strains were exposed to chlorine (45 ppm × 24 h), and survival time was recorded hourly. The most sensitive strain was PWD/PhJ (mean survival time = 7.6 ± 0.8 h), and the most resistant was 129X1/SvJ (mean survival time = 28.3 ± 1.3 h). Values are mean ± SE (n = 8 mice/strain) of mice that died during the observation period (2 wk after exposure) and excluded the mice tested that survived longer than the observation period. The numbers in parentheses indicate the number of mice that survived past the observation period.