Figure 2From: Antimicrobial peptide β-defensin-1 expression is upregulated in Alzheimer’s brain Transthyretin is a marker protein for epithelial cells. Epithelial cells of the choroid plexus (CP) are demonstrated in an age-matched control brain using antibody to transthyretin (A). While hBD-1 is only weakly expressed in control CP epithelium (B), the peptide is strongly expressed by these cells in the AD CP (C).Back to article page