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  1. 2019New_Mesh_Tree_Hierarchy.txt 
    https://www.nlm.nih.gov/.../download/2019New_Mesh_Tree_Hierarchy.txt
    ... 291.274 Deanol D02.033.100.291.310 Epinephrine D02.033.100.291.310.500 Racepinephrine D02. ... 291.274 Deanol D02.092.063.291.310 Epinephrine D02.092.063.291.310.500 Racepinephrine D02. ...
  2. pdfNLM Technical Bulletin, no.33-44 
    https://www.nlm.nih.gov/.../nlmarchives/techbull/33-44-1972.pdf
    ... effects through the mediation of norepi- nephrine, whereas epinephrine is the emergency hormone of the sympathetic nervous ... to influence the same receptors as norepinephrine and epinephrine are termed adrenergic drugs. Receptors are classified as ...