Figure 1. Kairomonal communication in mice is dose-dependent (mean±SEM).

Aversion of mice to increasing doses of rat urine was quantified by comparing the time spent in two opposing arms of an arena, with one arm containing incremental doses of rat urine and the other containing buffered saline (trial duration = 600 s, n = 10 mice). The graph depicts average time spent in rat urine arm. The gray line depicts sigmoidal fit. Abscissa depicts dose of rat urine employed (log ₂ scale; x arbitrarily set as 3.125 µl of rat urine).