CEBPB and Alzheimer disease: In alignment with Aβ42 levels escalation by AD-FMT, immunoblotting (IB) showed that much stronger Aβ aggregates smear in the brain of C/EBPβ transgenic mice, similar to human AD brain lysates (Fig. 1F, left panel), suggestive of demonstrable basal levels of Aβ40 peptides in WT mice, which was not elevated in C/EBPβ transgenic mice by HC-FMT.