FKBP5 and schizophrenia: The intensity of FKBP51 staining on superficial NeuN+ neurons was + 11.4% higher in schizophrenia subjects vs controls (t =  – 7.408, P < 1.22E-13, FDR < 3.7E-13; Fig. 4e, iii); this increase was not seen in the deep layers (Fig. 4e, iv).