NTRK2 and alcohol drinking: Brain-derivedneurotrophic factor (BDNF) and its receptors affect the pathogenesis of alcoholism.In this study, we examined the expression of BDNF, tropomyosin receptor kinase B(TrkB) and p75 neurotrophin receptor (p75NTR) in the hippocampus of a dog model ofchronic alcoholism and abstinence.