Although several studies have already noted GSK3β signaling activity in isolated astrocytes [40]–[42], and elevated staining of phospho-serine-9 GSK3β in astrocytes by light microscopy has been reported in cases of human tauopathies [43], other immunohistochemical studies [28]–[30], could not detect, or did not report, staining of GSK3β in astrocytes by light microscopy. The gene discussed is GSK3B; the disease is tauopathy.