Heroin addicts have increased platelet alpha 2-adrenoceptor densities which correlate with the severity of the abstinence syndrome.
D001792:Blood Platelets / Q000378:metabolism*; D003000:Clonidine / Q000378:metabolism; D006556:Heroin Dependence / Q000097:blood*; D006801:Humans; D011942:Receptors, Adrenergic, alpha / Q000378:metabolism*; D013375:Substance Withdrawal Syndrome / Q000097:blood*
D011942:Receptors, Adrenergic, alpha; D003000:Clonidine