Surviving+dopaminergic+neurons+in+labeled+with+antibody+to+tyrosine+hydroxylase+in+a+graft+transplanted+16+years+before+death+in+subject

Figure taken from: Goetz, C. G., Wuu, J., McDermott, M. P., Adler, C. H., Fahn, S., Freed, C. R., Hauser, R. A., Olanow, W. C., Shoulson, I., Tandon, P. & Leurgans, S. (2008). Placebo response in Parkinson's disease: Comparisons among 11 trials covering Medical and Surgical Interventions. //Mov. Disord.,// 23: 690–699.