Table 3.

Arteriolar sensitivity (EC₅₀) to clonidine and phenylephrine before and after removal of the endothelium

	Before Removal	After Removal
Clonidine
Soleus	5.5E−7 ± 2.3E−7	3.1E−8 ± 7.1E−9†
Red gastrocnemius	1.1E−7 ± 3.2E−7	3.5E−8 ± 1.9E−8†
White gastrocnemius	4.5E−8 ± 3.1E−8*	2.8E−8 ± 1.1E−8
Phenylephrine
Soleus	4.2E−6 ± 2.3E−6	2.7E−6 ± 2.1E−6
Red gastrocnemius	8.9E−7 ± 4.8E−7*	7.5E−7 ± 3.9E−7*
White gastrocnemius	4.4E−7 ± 3.2E−7*	4.1E−7 ± 2.2E−7*

All values are in molar concentration as means ± SE; E, represents the logarithmic values of the sensitivity measurements.

^*P < 0.05 vs. soleus;

^†P < 0.05 vs. endothelium intact for same muscle type.