Decrease in cremasteric arteriolar diameter during superfusion with 21% O2 PSS before and after application of DDMS in 2K1C rats 4 weeks after clipping the left renal artery versus their sham-operated controls. Parentheses indicate number of animals in each group; * = within group, p<0.05 (2K1C); p<0.001(sham), significantly different from response prior to treatment with DDMS, δ= p<0.01, between groups, significantly different from sham with same treatment.