S-38 Innovative approach to drug discovery for Alzheimer disease   S38-1. Alzheimer vaccine using viral vectors   S38-2. Scope of amyloid formation inhibitor development targeting β-secretase   S38-3. Passive immunotherapy targeting Aβ oligomers in Alzheimer’s disease   S38-4. γ-Secretase: Mechanism of intramembrane cleavage of APP and possible drug discovery   S38-5. Regulation of Alzheimer pathology by calpain