FIG 7.

MyoR modulates AV delay. (A) EKG analysis was performed on 4-week-old MyoR^+/+ and MyoR^−/− mice, and representative tracings from heart rate-matched littermates are shown. Note the mild prolongation in the PR interval (double-headed arrow) of MyoR^−/− mice compared to MyoR^+/+ mice. (B) Summary of EKG analysis on MyoR^+/+ (n = 7) and MyoR^−/− (n = 8) mice. The PR interval is prolonged in MyoR^−/− mice compared to MyoR^+/+ mice, while the HR, QRS interval, and QT interval are similar between groups. *, P < 0.05.