Figure 9.

Scatter plots of AVJ conduction velocity (CV) vs. total cushion volume (A) and conduction velocity vs. cushion thickness (B) for ethanol-exposed, saline-treated, and uninjected embryos. There was no obvious linear relationship between CV and the cushion size (volume and thickness) at this stage. Number of embryos in the three groups: untreated (n = 10 at HH stage 20), saline-treated (n = 9 at HH stage 20), and ethanol-treated (n = 14 at HH stage 20; n = 8 at HH stage 19). n, number of embryos. AVJ, atrioventricular junction; HH, Hamburger–Hamilton.