Fig. 4From: Frontal cortex chitinase and pentraxin neuroinflammatory alterations during the progression of Alzheimer’s diseasea–f Photomicrographs of astrocytes dual immunolabeled for CHI3L1 (blue/black) and APP/Aβ (brown) seen in plaques (a–c) as well as in areas without plaques (d–f) in sAD. Note that not all CHI3L1-positive astrocytes were associated with amyloid-positive plaques and blood vessels (arrows). Scale bar in e = 50 μm and applies to a, b, d. Scale bar in f = 100 μm and applies to cBack to article page