Figure 1.
Effects of terbutaline given on PN2–5 on norepinephrine levels in heart and liver (note different scales). Data represent means and standard errors obtained from 8–10 animals in each group for each age and sex. ANOVA appears at the top of the panel; lower-order tests for males and females were carried out because of the treatment interaction with sex, and these appear within the panel. For males, values were separated by tissue because of the treatment × tissue interaction. For the heart, there was no interaction of treatment × age, so only main treatment effects are reported, whereas tests at each age were carried out for the liver (significant treatment × age interaction) but were not significant; however, the decrement in both the heart and liver on PN60 were significant taken together (p < 0.03 for the main treatment effect, no interaction of treatment × tissue). No lower order tests were carried out for females because of the absence of significance for the overall ANOVA. NS = not significant.