MAPT and Alzheimer disease: Proteomic analyses of aggregates from equal‐weight aliquots of AD vs. AMC hippocampus samples indicate an AD/AMC ratio of 1.84 (t test p < 0.01), in reasonable agreement with previous AD/AMC protein ratios of 1.65 and 1.66 for Aβ and tau aggregates, respectively (Ayyadevara, Balasubramaniam, Parcon, et al., 2016), and do not differ significantly from the ratios observed here for RNA and DNA.