PMID-sentid Pub_year Sent_text comp_official_name comp_offsetprotein_name organism prot_offset 15521060-5 2004 The results showed that chronic nicotine and smoking treatment differentially changed the levels of TH protein in VTA and SNC and DA D1 receptor levels in Nac and CPu. Nicotine 32-40 tyrosine hydroxylase Rattus norvegicus 100-102