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. 2017 Mar 1;26(7):280–298. doi: 10.1089/ars.2016.6686

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Copyright 2017, Mary Ann Liebert, Inc.

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FIG. 2. — Poly-Ub levels. (A) Total levels of poly-Ub-bound proteins in DS (n = 6/group) and DS/AD (n = 6/group) cases compared with their age-matched controls (n = 6/group). (B, C) Increased poly-Ub of two types of ubiquitin chains [K63 (B) and K48 (C)] in both DS (n = 6/group) and DS/AD (n = 6/group) cases compared with their age-matched controls (n = 6/group). Representative bands are shown and protein levels (A−C, upper bands) were normalized per total protein load, named total load (A−C, lower bands). Densitometric values are shown as percentage of Ctr Y set as 100%. Mean ± SEM (DS vs. Ctr y *p < 0.05; DS/AD vs. DS **p < 0.01; DS/AD vs. Ctr O ***p < 0.001; DS vs. Ctr Y and DS/AD vs. DS [for K48] *p < 0.05; DS vs. Ctr Y, DS/AD vs. Ctr O, and DS/AD vs. DS [for K63] **p < 0.01; Ctr O vs. Ctr Y ^#p < 0.05 one-way ANOVA). AD, Alzheimer's disease; ANOVA, analysis of variance; DS, Down syndrome; DS/AD, Down syndrome with Alzheimer's disease; SEM, standard error of the mean.