Figure 2. Soleus muscles of TRα1−/−β−/− mice show a marked leftward shift of the force-frequency relationship.
Force-frequency relationship of EDL (A) and soleus muscles (B) from TRα1−/−β−/− mice (○; n = 6 animals) and wild-type control mice (•; n = 5 animals). Values are presented as means ±s.e.m.*Significant difference (P < 0.05) between TRα1−/−β−/− mice and their wild-type controls.