MAPT and Alzheimer disease: Based on node colors, these clusters are outlined as follows: cluster 1 (red) involves investigating Aβ and phosphorylated tau protein in animal models through in vivo experiments to unravel the pathogenesis of neurodegenerative disorders; cluster 2 (green) centers around the examination of tau protein through in vitro experiments to comprehend the pathogenesis of AD and PSP; cluster 3 (blue) encompasses tau-related diseases and associations.