Figure 2: Inhibitory effect of various doses (0.001 nM–10 nM) of T4 or T2 on synaptosomal Na+-K+-ATPase activity, in vitro. The data are represented as mean ± SEM of four separate experiments, taking six animals in each group. The vertical lines denote SEM. Filled circles indicate effects of T4 on Na+-K+-ATPase activity while filled squares indicate effects of T2.