New England Journal of Medicine · 1992 · 757 citations · 31 references
Fetal-tissue implants appear to offer long-term clinical benefit to some patients with advanced Parkinson's disease.
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Margaret M. Hoehn, Melvin D. Yahr · Neurology · 1967 · 11.9K citations · Full text
Grafts of Fetal Dopamine Neurons Survive and Improve Motor Function in Parkinson's Disease
Olle Lindvall, Patrik Brundin, Håkan Widner et al. · Science · 1990 · 1.2K citations