Fig. 2

The estrous cycle stages did not differ in CSD susceptibility. There was no difference among the estrus (n = 7), proestrus (n = 7), and metestrus/diestrus (n = 5) stages in CSD frequency, speed, duration, or amplitude triggered by topical 1 M KCl as shown in Fig. 1. Data shown here are from the female group in Fig. 1