during contractions evoked by the alpha 2-adrenergic agonists , alpha-methyl norepinephrine and b-ht 920 , warming caused a relaxation , whereas during contractions due to the alpha 1-adrenergic agonists , cirazoline , methoxamine , st 587 , and phenylephrine , it caused an augmentation .
C1373109
alpha 1-adrenergic agonists
C0031469
phenylephrine