alzheimer'sdisease alzheimerdisease analysis anatomy autonomicagents brain cellline cellmembrane cellmembranes centralnervoussystem congresses culturesandculturemedia dd391 development developmentalneurobiology drugeffects experimental fetalnervetissue freeze-etching freezeetching growth histology immunologicalaspects intracerebraltransplantation membranes(biology) methods morphogenesis nervoussystem neurochemistry neurons neuropharmacology parkinson'sdisease physiology psychopharmacology qm575 qv77c777b1986 rd594 surgery transplantation ultrastructure vertebrates vertebratesnervoussystem vertebratesnervoussystemtissuesanatomyresearchfreeze-etching wl101s219m1977 wl368c3931986 wm220c714n1988