"any agent that causes a narrowing of an opening of a blood vessel: cold or stress or nicotine or epinephrine or norepinephrine or angiotensin or vasopressin or certain drugs; maintains or increases blood pressure"@en-us . "vasoconstrictor"@en-us . "pressor"@en-us . . . "04522421-n"^^ . "103568168"@en-us . . . "vasoconstrictive"@en-us . "104346523"@en-us . "0"^^ . "any agent that causes a narrowing of an opening of a blood vessel: cold or stress or nicotine or epinephrine or norepinephrine or angiotensin or vasopressin or certain drugs; maintains or increases blood pressure"@en-us . "0"^^ . . . . . . . "vasoconstrictor"^^ . . "104522421"^^ . .